IoT Companies in London: 208 Active Firms (2026)
IoT companies in London build connected devices, sensors and networked platforms for consumer, industrial and public-sector uses.
Buying centres usually sit with operations, product, facilities, information-security and engineering teams rather than a single software owner. London suppliers tend to sell into business and public-sector environments where devices feed monitoring, automation or remote-control workflows, with some consumer hardware distribution at the edge. Engagements often start as pilots, proofs of concept or site-level deployments, then move into managed fleets when reliability, maintenance and update obligations are clear. The commercial shape runs from lean specialist teams designing sensors or gateways to mid-market operators handling procurement, installation and device-management work.
Read more
London has 208 active trading IoT companies in this list, a compact market by software standards but broad enough to include hardware design, distribution, embedded software and managed device platforms. Reported employment totals 1,301 people, which suggests a sector with a long tail of small teams rather than a labour footprint concentrated only in larger operators. The revenue profile also has a visible scale-up edge: 20 sit above £5M turnover, while 21 have incorporated since 2022. That mix matters for researchers, because recent entrants and more established operators often face the same product-security obligations but very different compliance capacity.
Consumer-facing connectable products now sit within the PSTI regime rather than a purely voluntary security code. Manufacturers, importers and distributors each carry obligations: default passwords must not be generic, buyers need a route for reporting security issues, and product information has to state the minimum security-update period. Manufacturers also need a Statement of Compliance, while importers and distributors must check that it accompanies relevant products before sale. Enforcement sits with the Office for Product Safety and Standards. Industrial, property and healthcare deployments may add customer-led assurance demands, especially around device identity, patching and incident response.
The cohort appears split between specialist hardware teams and a smaller set of operators able to support estate-wide deployments. Customer demand tends to favour suppliers that can prove device maintenance, update policies and secure onboarding, rather than those selling sensors alone. That pushes London firms towards services, integration and managed platforms, where recurring revenue is easier to defend but physical-device costs still matter. Consolidation appears plausible where adjacent property, energy, mobility and healthcare buyers prefer fewer device partners, although many firms may remain specialist vendors rather than moving into software-style scaling.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
208
Active firms
2026
20
Over £5M turnover
London firms
21
New since 2022
London incorporations
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Key facts
About 9% of the trading cohort reports turnover above £5M (20 of 208 firms) — the rest sits below that revenue band.
10% of the cohort was incorporated since 2022 (21 firms), so a sizeable share is in its first few filing cycles.
Consumer connectable products came under the Product Security and Telecommunications Infrastructure Act 2022 and the 2023 security requirements regulations from 29 April 2024.
Manufacturers, importers and distributors must meet duties on passwords, vulnerability reporting and minimum security-update periods, with enforcement by the Office for Product Safety and Standards.
Manufacturers must produce a Statement of Compliance, and importers or distributors must not make products available unless it accompanies the product.
GOV.UK’s consumer-IoT manufacturer survey expected the UK IoT market to reach £24.74 billion by the end of 2024.
OECD digital-economy reporting puts IoT adoption among firms at 27% on average across measured economies, ranging from 6% to 53%.
Top London IoT companies
Develops and supplies Internet of Things hardware and services including cellular, Wi‑Fi and GNSS communication modules, IoT connectivity and eSIM solutions, device management platforms, and…
Serves B2B IoT product teams, device manufacturers and enterprises in sectors including energy, utilities, transport, smart cities, healthcare, retail, construction, agriculture and industrial…
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDesigns and supplies IoT hardware including edge gateways, wireless and RS485 sensors, sensor hubs, GSM/GPRS communication terminals, and radio modems. Devices support data acquisition, environmental…
Serves B2B customers in industrial automation, utilities, building management, agriculture and healthcare, including teams managing SCADA, remote monitoring, sensing and wireless communications for…
Financial Health
StrongStrong · Hiring · 150% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 4 filingsDesigns and supplies smart home automation systems and AIoT devices including smart switches, control panels, sensors, and security kits, with software platforms and protocols for integrated control,…
Serves a mix of B2B and consumer customers, including distributors, system integrators, real estate developers, homeowners/end users, and operators of residential, hotel, office, elderly care and…
Financial Health
WeakWeak · -11% CAGR over 3y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Develops and supplies Internet of Things hardware modules, cellular and LPWA connectivity, eSIM solutions, and device management platforms. Provides engineering, manufacturing, and security services…
Serves B2B OEMs, device makers and enterprise operations teams building connected products and industrial IoT deployments across manufacturing, utilities, transport, healthcare, retail, smart…
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops wireless IoT sensors, controllers and software for building management systems, enabling HVAC automation, occupancy monitoring and indoor air quality measurement. Provides a cloud portal and…
Sells to businesses and public sector organisations managing commercial buildings, especially facilities managers, building operators and sustainability teams seeking HVAC automation, energy savings…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 5y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops and sells sensor devices and software for property monitoring. Platform tracks noise levels, occupancy, smoking, and indoor climate in rental properties, providing real-time alerts,…
Sells to B2B property professionals managing rental portfolios, including vacation rental hosts and managers, aparthotel and hotel operators, student accommodation providers, and multifamily…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides smart thermostat and sensor technology with data analytics software for social housing providers. Monitors temperature, humidity, ventilation and energy use to detect mould risk, support…
Serves social housing providers and social landlords, including housing associations and local authority housing teams responsible for rented homes, resident welfare, compliance, retrofit funding and…
Financial Health
StrongStrong · Hiring · 30% CAGR over 5y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDesigns and manufactures Raspberry Pi‑based industrial hardware including industrial PCs, HMIs, PLC/PAC controllers, IoT gateways, industrial displays, and AI cameras. Also supplies Raspberry Pi…
Serves industrial OEMs, system integrators and embedded/IoT developers using Raspberry Pi-based hardware for automation, HMI, gateway and AI camera projects, with ODM/OEM buyers supported.
Financial Health
StrongStrong
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 3 filingsDevelops and supplies smart home battery systems and energy management software that store off‑peak electricity and power homes during peak periods. Software automates charging, discharging and grid…
Targets UK homeowners and households using smart electricity tariffs, including early adopters interested in energy storage without solar panels. Also serves accredited local installers and energy…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Provides Internet of Things (IoT) connectivity services and platforms for businesses, including device and SIM management, IoT data analytics, low‑power wide‑area and satellite connectivity,…
Serves global businesses and major brands deploying IoT, particularly in healthcare, transportation, energy, manufacturing and automotive sectors, including teams managing connected devices, SIMs and…
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDesigns and engineers smartphones, secure hardware platforms and specialised consumer devices. Provides end‑to‑end handset development including industrial design, electronics, firmware and…
Serves B2B technology brands and device makers developing smartphones, secure mobile platforms, AI consumer accessories, gaming hardware, and specialised enterprise or communication devices.
Financial Health
WeakWeak
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops wireless sensor systems for environmental and structural monitoring. Produces miniature low‑power sensors that form self‑calibrating mesh networks, with base stations and an online platform…
Serves public-sector and B2B organisations developing smart city and infrastructure projects, including construction, tunnelling, healthcare, events and security operators.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops smart lighting control systems and IoT devices for street, area, decorative, and solar lighting. Provides asset management platforms, telecom element management software, and tools for…
Serves municipalities, smart-city teams, campus and facility operators, solar lighting manufacturers and telecom network operators.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 2 filingsDevelops Internet‑of‑Things tracking technology including battery‑free Bluetooth tags, network infrastructure and cloud software that monitor and locate physical assets. Provides real‑time supply…
Serves enterprise B2B customers in retail, grocery, logistics, post and parcel, and quick service restaurants, particularly operations and supply chain teams managing inventory, reusable assets,…
Financial Health
StableStable · -25% CAGR over 1y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops and supplies battery‑free digital locking systems and access management software. Products include smart locks, programmable keys and mobile-based access solutions for residential buildings,…
Serves residential property owners and managers, student housing and rental operators, schools, hospitals, commercial offices, public facilities, and critical infrastructure operators in energy,…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Designs and engineers smartphones, secure hardware platforms, and specialised consumer electronic devices. Provides end‑to‑end device development including industrial design, electronics, firmware,…
Serves consumer electronics brands and enterprises developing smartphones, secure mobile platforms, AI devices, gaming hardware, communications products, and mobile accessories.
Financial Health
N/AN/A
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDesigns and supplies LCD and OLED displays, touch interfaces, embedded computing hardware and industrial IoT gateways. Provides product development services including firmware, optical and mechanical…
Serves B2B OEMs and product development teams in industrial automation, medical and wellness, home appliances, retail signage, agritech, utilities/smart metering, EV charging and marine sectors…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops IoT-based tracking and monitoring systems for shipping containers, including multi‑sensor lock devices, satellite and cellular connectivity, and a cloud command platform providing real-time…
Serves B2B customers across the global shipping container value chain, including shipping lines, freight forwarders, logistics providers, cargo owners, distributors and authorities.
Financial Health
StrongStrong · Growing · 1% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Provides Internet of Things (IoT) connectivity services and platforms for businesses, including SIM and device management, IoT data analytics, low‑power network connectivity, satellite IoT,…
Serves businesses and major global brands using connected devices, particularly in healthcare, transportation, energy, manufacturing and automotive sectors, plus organisations managing remote assets…
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 3 filingsDevelops and distributes vehicle telemetry devices and operates a connected car data platform. Collects and analyses vehicle diagnostic and trip data to provide predictive breakdown detection, fleet…
Serves B2B roadside assistance providers and mobility organisations across Europe that manage connected-car customer services, breakdown operations, and vehicle uptime programmes.
Financial Health
DistressedDistressed · Hiring · 7% CAGR over 2y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 3 filingsDevelops telematics hardware, cloud platforms and software applications for fleet management and asset tracking. Provides devices, data streaming services and analytics tools to monitor vehicles,…
Serves B2B and public-sector organisations managing fleets, mobile assets and cargo, including transportation and logistics firms, commercial and service fleets, construction companies, industrial…
Financial Health
StableStable · 0% CAGR over 2y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops wireless patient monitoring systems for healthcare providers. Provides a platform with wearable sensors, bedside gateways and server software that capture, transmit and analyse physiological…
Serves healthcare providers, including large multispecialty hospitals and specialist care centres, targeting clinical leaders, doctors, nurses and care teams across wards, ICUs and home-care settings.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Develops embedded software and platforms including HTML5 browsers and rendering engines for TVs and automotive systems, IoT gateways, multiscreen media sharing and connected car content platforms,…
Serves B2B customers including automotive OEMs and infotainment suppliers, consumer electronics and connected-device manufacturers, broadcasters/TV platform operators, telecom/network equipment…
Financial Health
N/AN/A
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDesigns and manufactures computer hardware and electronic systems including motherboards, graphics cards, laptops, servers and embedded boards. Also develops AIoT, industrial computing, vehicle…
Serves consumers and businesses, including PC gamers, professional creators, home and business EV users, and organisations in automotive, commercial transport, industrial AIoT, server/networking and…
Financial Health
StableStable · 0% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 4 filingsDevelops wearable sensor devices and software for monitoring and recording physiological biosignals. Provides data analysis algorithms for real-time and offline processing, database mining,…
Serves businesses developing or using wearable sensor and biosignal monitoring products, including teams needing physiological data capture, analysis, and related algorithms.
Financial Health
StrongStrong
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops technology-enabled care systems for adult social care, including the Andi digital hub that connects alarms, sensors and monitoring devices, collects care data, and routes alerts to carers,…
Sells primarily to local authorities, adult social care teams and care providers implementing technology-enabled care, serving elderly and vulnerable people and their support networks through service…
Financial Health
HealthyHealthy · Hiring · 69% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops and supplies onboard video surveillance, AI analytics, and data management systems for school buses, transit vehicles, and fleet operations. Products include cameras, mobile data recorders,…
Serves school districts, transit agencies, rail operators, first responders, police, ambulance services, taxi companies and smart city fleet operators managing passenger transport and safety fleets.
Financial Health
StrongStrong
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops home energy storage systems and software for managing and sharing electricity. Provides smart battery hardware and GridShare software that connects residential batteries into virtual power…
Serves homeowners with solar and home battery systems, existing battery owners seeking support, and energy-sector organisations interested in residential flexibility and virtual power plants.
Financial Health
StableStable · -14% CAGR over 6y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Develops and supplies intelligent transportation systems for road tolling and traffic management, including electronic and satellite tolling platforms, roadside hardware, and software for urban…
Serves public-sector transport agencies, road authorities, toll operators and infrastructure concessionaires managing highways, tunnels, bridges and urban traffic networks worldwide.
Financial Health
N/AN/A
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops smart personal protective equipment including connected ear defenders and sensors that monitor noise, dust, vibration, and air quality exposure. Provides industrial hygiene tools and a…
Serves B2B industrial employers and health, safety and industrial hygiene teams in workplaces where staff face noise, dust, air quality or vibration exposure, including organisations managing PPE and…
Financial Health
WeakWeak · -20% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides IoT-based metering and monitoring systems that connect to pulsed water, electricity, gas and heat meters. Installs data collection devices and offers a web portal that records consumption,…
Serves B2B and public-sector customers with multiple utility meters, including facilities managers, universities, emergency services, hospitality groups, water retailers, smart buildings and city…
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops AI-powered traffic monitoring sensors and software that capture and classify real-time transport movements. Provides data on traffic flow, speeds, turning behaviour and near‑miss incidents…
Serves public-sector city, highway and transport authorities, plus urban infrastructure teams, seeking data for road safety, congestion, sustainability and traffic signal decisions.
Financial Health
WeakWeak · -51% CAGR over 5y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops smart metering technology and a payment platform for energy sub‑metering. Provides connected meters and software enabling landlords and operators to collect tenant energy payments, configure…
Serves landlords, building owners, managing agents and smart-meter operators in the energy sub-metering market, with tenant end users using the platform for prepaid energy credits.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 3 filingsDevelops hardware and software platforms for monitoring and managing heat networks, boilers and heat pumps. Supplies smart metering hubs and analytics tools that capture energy and utility data,…
Serves residential developers, heat network operators, heat suppliers, and metering and billing providers managing communal heat networks and low-carbon heating systems across the UK.
Financial Health
WeakWeak · -17% CAGR over 2y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 3 filingsProvides IoT hardware and SaaS software for construction equipment monitoring and fleet management. Offers telematics devices, asset tracking tags, connectivity gateways and a data platform for…
Serves construction-sector businesses, including equipment OEMs, rental companies, contractors, and fleet operators managing powered and non-powered assets, jobsite equipment, and machine data.
Financial Health
HealthyHealthy · 4% CAGR over 2y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 3 filingsProvides fleet management and telematics solutions for transport and logistics operators. Supplies GPS tracking devices, IoT asset tracking hardware, driver identification systems, and software for…
Serves B2B organisations operating vehicles and mobile assets, including transport and logistics firms, bus and coach operators, trade and service fleets, corporate light fleets, construction…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 2y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 4 filingsProvides smart building management technology that meters, monitors and controls energy, utilities and environmental systems. Offers cloud software, sensors and automation to track electricity, gas…
Serves UK organisations managing commercial buildings or estates, including retail, education, property, markets and facilities teams responsible for single sites or multi-site portfolios.
Financial Health
StrongStrong · Hiring · 9% CAGR over 3y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops ruggedised edge computing and AI data platforms, including portable edge nodes, deployable micro data centres and mobile networking systems. Products support defence, public safety, maritime…
Serves defence and military organisations, public safety agencies, smart city operators, telecom/private network teams, industrial and energy operators, maritime/logistics firms, and other…
Financial Health
StableStable · -3% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops wireless access control systems designed for historic and listed buildings, including door controllers, cloud-based card readers, and browser-based management software for monitoring access,…
Serves property managers, building owners and integration partners responsible for historic, listed or heritage residential, commercial and student accommodation buildings across London and the UK.
Financial Health
StableStable · -68% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops and manufactures industrial automation and communication equipment including distributed control systems (DCS), programmable logic controllers (PLC), remote terminal units (RTU), IoT…
Sells primarily to businesses and utilities needing industrial automation and monitoring systems, including power and energy, water and wastewater, building and campus management, smart city and…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides air and noise pollution monitoring systems using sensor networks and integrated cameras to measure particulates and gases, identify pollution sources, and generate compliance reports,…
Serves B2B and public sector organisations managing urban pollution risks, including construction firms, NHS trusts, local authorities, industrial waste operators and transport infrastructure owners.
Financial Health
DistressedDistressed · -72% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides home monitoring technology for social care and healthcare providers, including in‑home sensors and software that track daily activity, sleep, movement and falls. The system generates data…
Serves local authorities, ICBs, healthcare authorities, social care teams, private domiciliary care providers and care homes, with a developing direct offer for families supporting vulnerable people…
Financial Health
HealthyHealthy · Hiring · 60% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides mobile apps and devices for personal safety and lone worker protection, enabling real-time alerts, GPS tracking, incident reporting and monitoring. Offers white‑label safety apps, panic…
Serves organisations with lone and mobile workers across retail, healthcare, education, construction, finance, estate agency, local authorities and corporates, plus resellers and individuals seeking…
Financial Health
WeakWeak · -7% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 2 filingsProvides public mobile device charging solutions for venues such as airports, retail, healthcare and events. Supplies charging lockers, hubs and power‑management systems with IoT connectivity,…
Sells B2B to airports, transport hubs, retailers, event venues, healthcare and education sites, and corporate/public-sector facilities serving passengers, visitors, customers, students and staff.
Financial Health
WeakWeak · -13% CAGR over 1y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops sports tracking technology including sensor‑equipped connected balls, portable local positioning systems (LPS), and player wearables that capture real-time movement and performance data for…
Serves professional sports teams, coaches, leagues and rights holders, with relevance to broadcasters, fan-experience teams, ball manufacturers and technology partners in football and other field…
Financial Health
StrongStrong · Growing, Hiring · 33% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides supply chain tracking and monitoring solutions, including GPS tracking devices for shipments and containers and a platform for viewing asset location, condition, and security in real time…
Serves B2B supply chain, logistics and shipping teams that need visibility over parcels, pallets, containers and high-value assets in transit, including businesses in consumer goods, wine and…
Financial Health
WeakWeak
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops energy management systems that monitor and control energy use across distributed facilities. Provides hardware, data collection, analytics and automation software for asset‑level monitoring,…
Serves B2B organisations operating distributed facilities or large buildings, including BFSI branches, quick service restaurants, retail stores, cloud kitchens, real estate operators and swimming…
Financial Health
WeakWeak · -8% CAGR over 4y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 2 filingsDevelops air purification systems for buildings using biotechnology and connected devices. Products include air treatment units, UV disinfection lamps, air quality sensors, and cloud-based monitoring…
Sells to businesses, office occupiers, commercial building owners and facilities or ESG teams seeking healthier indoor environments for employees, tenants and customers.
Financial Health
DistressedDistressed · -44% CAGR over 1y
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsProvides telematics and fleet management software platforms, including vehicle and GPS tracking, electronic logging devices, asset tracking, AI dashcams, and driver apps. Systems help organisations…
Sells to businesses, public sector bodies and fleet operators managing vehicles and mobile assets, including transport, logistics, construction, utilities, telecoms, rental, emergency services,…
Financial Health
StableStable
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
Financial sub-scores
Computed from 5 filingsDevelops and manufactures material identification devices that use infrared sensors and machine‑learning algorithms to analyse and classify textiles, plastics, and carpet or flooring materials.…
Serves B2B customers in textile, plastics, carpet and flooring sectors, including recyclers and organisations that need to sort or verify material composition across operations worldwide.
Financial Health
StrongStrong
Location
Buy this list of 357 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
307 more companies and their verified directors are in the file
You’re seeing the top 50. Buy the list to get all 357 with directors, websites and financials.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
Sources
- Cyber security of consumer IoT: manufacturer survey
- The study initially mapped 394 manufacturers of consumer connectable products.
- Less than 10% of initially mapped manufacturers engaged in the research: 33 of 394.
- A desk research exercise examined a subset of 70 companies for publicly available compliance evidence.
Also in London
Related directories
Frequently asked questions
How many IoT companies are there in London?
What counts as a IoT company in this list?
Which are the largest IoT companies in London?
What do IoT companies in London actually do?
How does London IoT compare internationally?
How is this list built and how fresh is the data?
How big are the typical IoT companies in London?
Are these mostly new or established IoT companies?
What SIC codes does this use?
What buying signals should I look for?
Buy all 357 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.