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IoT Devices Companies in the UK: 700+ Active Firms (2026)
IoT device companies in the UK design, manufacture or distribute internet- and network-connectable products under the UK product-security regime.
Buying centres tend to split between operations teams looking for monitoring and control equipment, IT and security teams responsible for device fleets, and product teams embedding connectivity into physical goods. Customer types run from consumer distributors to commercial and industrial buyers, so sales motions vary from channel-led hardware supply to project-based deployments with recurring software or data-service fees. Typical engagements start with evaluated units or a site trial, then move into fleet management, firmware support and service-level commitments. Better-qualified suppliers combine hardware accountability with software maintenance, rather than treating connectivity as an add-on.
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The UK cohort has 768 active trading companies, a small enough population for sector screens to be shaped by product scope and regulatory status rather than by software labels alone. Scale is uneven: 73 companies report turnover above £5M, while 57 were incorporated since 2022. Reported employment totals 2,070 people across 126 firms, so headcount visibility sits with a subset more likely to include established manufacturers, distributors and device-management specialists. That mix points to a market where hardware margins and recurring service income often need to be read together.
Consumer connectable products sit under the Product Security and Telecommunications Infrastructure Act and security requirements regulations, enforced by the Office for Product Safety and Standards. Duties attach not only to manufacturers but also to importers and distributors, which matters in a market where hardware design, firmware, cloud management and channel distribution often sit in separate entities. Password design, vulnerability reporting and security-update disclosure are now baseline compliance questions. Manufacturers need a Statement of Compliance; importers and distributors must check that it accompanies relevant products before placing them on the UK market.
Commercial momentum appears to favour firms that can package hardware with device management, security updates and recurring monitoring services. Retail-facing suppliers tend to carry more visible compliance risk, while industrial vendors face longer sales cycles and integration work. Scale-up scarcity may keep acquisition interest focused on product lines with installed fleets, certification history and channel access, rather than on narrow device launches. The cohort may therefore consolidate around platform operators and specialist distributors, with small design houses remaining useful but exposed to margin pressure.
768
Active firms
2026
73
£5M-plus firms
Turnover above £5M
57
New incorporations
Incorporated since 2022
Key facts
About 9% of the trading cohort reports turnover above £5M (73 of 768 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (57 firms), so a sizeable share is in its first few filing cycles.
Consumer connectable products have been under the Product Security and Telecommunications Infrastructure Act 2022 and the 2023 security requirements regulations since 29 April 2024.
Manufacturers, importers and distributors share duties across passwords, vulnerability reporting, minimum security-update information and Statements of Compliance.
Enforcement sits with the Office for Product Safety and Standards under the UK product-security regime.
GOV.UK 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 an average of 27% across measured economies, ranging from 6% to 53%.
Top UK IoT devices companies
PowTechnology Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures industrial IoT remote monitoring systems that connect sensors and equipment to cloud platforms. Provides gateways, sensor integration and software for tank level, condition,…
Serves B2B industrial and infrastructure organisations globally, including chemicals, construction, data centres, manufacturing, utilities, energy, agriculture, waste management, transport, and fuel…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 4y
Location
Sierra Wireless (UK) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and supplies cellular IoT hardware and connectivity services, including wireless modules, modems, and rugged routers. Provides SIM‑based global connectivity, device management platforms, and…
Serves B2B customers developing and operating IoT deployments, including device manufacturers, enterprises, network teams and operations teams managing cellular or LoRaWAN device fleets and…
Financial Health
StableStable · -73% CAGR over 2y
Location
HMS Industrial Networks Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies industrial communication hardware and software that connect machines, controllers and devices to industrial networks and IT systems, including gateways, protocol converters,…
Serves B2B customers in industrial automation and connected infrastructure, including machine builders, OEMs, system integrators and operators in factory/process automation, building automation,…
Financial Health
StableStable · Hiring · 41% CAGR over 2y
Location
TRASNA HOLDINGS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies cellular IoT hardware and connectivity technologies, including LTE and NB‑IoT modules, SIM, eSIM and iSIM chips, and system‑on‑chip components, alongside cloud platforms for SIM…
Sells to telecom operators, IoT device OEMs and enterprises deploying connected devices, plus smart city, utilities and security organisations needing cellular connectivity and SIM/device lifecycle…
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops hardware and software for KNX IoT smart building connectivity, including Thread-based wireless chips, modules, hubs, mesh extenders, environmental sensors and development kits. Also provides…
Serves B2B customers in smart building and building automation, including KNX users, device developers/manufacturers, and organisations adopting Thread and KNX IoT connectivity.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
4D Monitoring Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies building monitoring systems combining retrofit sensors and an online dashboard to track energy use, environmental conditions, occupancy and equipment performance, supporting…
Serves businesses and property teams responsible for commercial buildings, including facilities, energy and asset managers managing plant, occupancy, comfort and compliance across single or…
Financial Health
StrongStrong · Hiring · 6% CAGR over 4y
Location
Pulse Systems Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDesigns and deploys cloud-connected IoT sensors and platforms for building management, including smart lighting controls, energy monitoring, air quality sensing and cloud BMS systems. Also provides…
Serves B2B customers managing commercial buildings and estates, including property developers, architects, consultants, building managers, facilities management teams and retailers.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 2y
Location
Dual Inventive Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops wireless IoT safety systems for railway infrastructure, including remote‑controlled track circuit devices, switching controls, rail temperature monitoring equipment, and a cloud-based…
Sells to rail infrastructure owners, operators and engineering contractors responsible for track access, worker safety and network maintenance, including teams managing on-track works and rail…
Financial Health
StrongStrong · Growing, Hiring · 55% CAGR over 5y
Location
INVISIBLE SYSTEMS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies IoT-based monitoring systems and software for temperature, energy, water and environmental conditions. Provides sensors, data platforms, installation and support to automate…
Serves enterprise and public sector organisations with complex, multi-site estates, including food manufacturing and retail, healthcare logistics, construction, facilities management, materials…
Financial Health
StrongStrong · Hiring · 18% CAGR over 4y
Location
Synetica Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures air quality, environmental and energy monitoring systems using LoRaWAN wireless sensors. Products measure parameters such as CO2, particulates, temperature and humidity and…
Serves B2B and public-sector facilities, estates and sustainability teams managing buildings and infrastructure, including power stations, exhibition centres, airports and office blocks.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 5y
Location
Vericon Systems Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops IoT-based monitoring systems and software for housing providers and property managers, including sensors and platforms for boiler performance, damp and mould detection, heat network…
Sells to housing providers, social landlords and property management teams responsible for rented homes, including asset, maintenance, compliance and sustainability teams.
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
Location
Smarter Technologies
Develops Internet of Things (IoT) hardware, software and communications systems for monitoring and managing assets, buildings and utilities. Provides smart metering, energy and water monitoring,…
Serves public and private sector organisations, including councils, leisure operators, marinas, defence teams, utilities and businesses managing buildings, assets, energy, water or compliance.
Location
UDlive Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies IoT-based environmental monitoring devices and software for infrastructure networks. Products include battery-powered water level sensors, RTUs, road temperature and bin…
Sells to water utilities, local authorities, highways agencies, civil engineering contractors and infrastructure operators responsible for wastewater networks, flood-prone drainage assets, roads and…
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
BLACK AND BLUE (E) LIMITED
Trajectory
5y · 2020–NowFinancial 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
MANDAR SOLUTIONS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and supplies wireless monitoring systems combining sensors, mesh networks and cloud software to track environmental conditions, waterways, buildings and assets. Provides system design,…
Sells to organisations in emergency services, exploration, healthcare, homeland security, transportation and utilities, plus building owners and facilities management companies managing monitored…
Financial Health
HealthyHealthy · -63% CAGR over 4y
Location
IACONNECTS TECHNOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides Internet of Things (IoT) monitoring systems and sensor-based solutions for buildings and industrial environments, including energy monitoring, air quality tracking, occupancy counting, water…
Serves businesses and organisations managing buildings and facilities, including smart buildings, oil and gas, manufacturing, hospitals, education providers and airports, with buyers focused on…
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
Guru Systems Limited
Trajectory
3y · 2023–NowFinancial 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
JR Dynamics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops industrial IoT sensors, digital telemetry systems and data analytics software used to monitor machinery and infrastructure. Provides instrumentation, edge data processing and asset…
Serves B2B operators and asset owners in rail and transportation, wind power, automotive, mining, marine and subsea, and energy sectors with demanding infrastructure and machinery monitoring needs.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
Connected Innovations Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops smart building safety technology including intelligent electrical sockets, sensors and control software that monitor electrical, thermal and environmental conditions, detect hazards such as…
Sells to property developers, building owners and operators, smart-city planners and facilities teams responsible for residential, commercial and critical buildings, plus partners integrating safety…
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
Creevx Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops industrial IoT systems for monitoring and managing building water systems. Provides sensors and a software platform that track water temperatures, generate compliance reports, trigger alerts…
Serves B2B facilities management companies, building owners and building managers responsible for water safety, legionella compliance, sustainability and operational performance in managed buildings.
Financial Health
WeakWeak · Hiring · 34% CAGR over 4y
Location
VEHICLE TECHNOLOGY SOLUTIONS LTD
Trajectory
3y · 2023–NowFinancial 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
Dhyan Group Limited
Trajectory
5y · 2021–NowFinancial 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
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops environmental monitoring systems for water and soil quality. Provides sensor devices, telemetry and cloud data platforms that collect real-time measurements, send alerts, and integrate with…
Serves businesses and public-sector/environmental organisations managing water, soil and flood risks, including fisheries, construction projects, catchment partnerships, agriculture, aquaculture,…
Financial Health
StableStable · Hiring · 15% CAGR over 4y
Location
LOXONE UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops building and home automation systems combining hardware and software to control lighting, heating, cooling, shading, energy use, security, audio and access. Provides controllers, sensors,…
Serves homeowners and B2B customers including commercial property operators, apartment and MDU developers, hospitality chains, offices, M&E designers, architects, and installation partners seeking…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 2y
Location
Intelligent Lilli Ltd
Trajectory
5y · 2021–NowFinancial 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
ORIGIN CONTROL SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides IoT-based monitoring and control systems for buildings, spaces, and equipment. Implements sensors, building management system integrations, and cloud dashboards to track assets, energy use,…
Serves businesses and estate operators managing facilities, commercial buildings, workspaces and fixed or movable assets, including teams responsible for facilities management, asset management,…
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 4y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops real‑time location systems and software platforms that track assets, tools, vehicles, and work‑in‑progress in industrial environments. Provides sensors, tags, and analytics used in…
Serves OEMs, Tier 1 manufacturers and large industrial operators in aerospace, defence, automotive, commercial vehicles, transit management, logistics, pharma, healthcare and other complex…
Financial Health
StableStable · 0% CAGR over 1y
Location
ULTRON TECHNOLOGIES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures electronic products and IoT devices. Provides electronics and software design, prototyping, compliance testing and contract manufacturing, producing sensors, gateways,…
Serves businesses and product teams developing electronic or connected devices, including OEMs needing sensors, gateways, microcontrollers or IoT products from concept/prototype through manufacture…
Financial Health
WeakWeak
Location
GENERAL DISTRIBUTION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures cloud-based access control and security systems. Develops IoT-enabled products that provide real-time monitoring, alerts and reporting, allowing organisations to remotely…
Sells to organisations needing cloud-based access control and security management across sites, estates and assets, aimed at stakeholders responsible for monitoring, reporting and remote site control.
Financial Health
StableStable · -9% CAGR over 4y
Location
UTTERBERRY LTD
Trajectory
5y · 2020–NowFinancial 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
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops industrial monitoring systems for drilling operations, using wireless sensors, cameras and IIoT networks to track personnel and equipment in hazardous zones. Provides real-time location…
Serves B2B customers in upstream oil and gas drilling, especially operators and drilling contractors managing rigs, Red Zone areas and harsh-environment assets, with buyers including safety,…
Financial Health
HealthyHealthy · -76% CAGR over 3y
Location
LIFE SMART LTD
Trajectory
4y · 2022–NowFinancial 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
Trajectory
3y · 2023–NowFinancial 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
Astra Telematics Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures IoT telematics hardware and provides fleet tracking and management platforms. Offers GPS tracking devices, vehicle data monitoring, remote immobiliser control, and connectivity services…
Serves B2B fleet operators, mobility-sharing providers, telematics service providers and resellers needing vehicle or asset tracking for commercial vehicles, public-service fleets and electric…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
INTEGRATED SYSTEM TECHNOLOGIES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and manufactures smart building technologies, including LED lighting systems, LED drivers, Power over Ethernet devices, and building management controls. Also provides workspace management…
Serves global B2B organisations, lighting designers, specifiers and facilities managers in commercial buildings, healthcare, hospitality, retail, entertainment, outdoor and amenity environments.
Financial Health
WeakWeak · -3% CAGR over 2y
Location
BARTER FOR THINGS LTD.
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops Internet of Things (IoT) sensor platforms and analytics for utilities, maritime and horticulture. Products include meter connectivity systems, air quality monitors and greenhouse sensors,…
Serves B2B customers in water utilities, maritime and horticulture, including water companies with metering assets, port operators, and farmers or greenhouse operators using sensor-led operational…
Financial Health
HealthyHealthy · -7% CAGR over 2y
Location
BEST ENERGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and manufactures IoT-based energy monitoring and management systems for commercial buildings and multi-site businesses. Provides hardware and software platforms that collect energy data,…
Serves B2B and institutional clients with multi-site buildings, including quick-service restaurants, food retailers, commercial estates, education providers, manufacturers and hotels worldwide.
Financial Health
StableStable · -61% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides telematics and tracking solutions for businesses, including vehicle fleet management, tool and asset tracking, and worksite equipment monitoring. Offers GPS devices, software platforms, and…
Serves B2B organisations managing vehicles, equipment, tools and worksites, including construction, landscaping, utilities, plant hire and facilities management firms across Europe.
Financial Health
StableStable · Hiring · 7% CAGR over 2y
Location
RUGGED NETWORKS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures rapidly deployable CCTV security systems, including mobile security units, camera towers, and controllers, with cloud-based software for monitoring and managing fleets of…
Sells to B2B security companies, CCTV fleet operators, and organisations securing remote infrastructure and construction sites that need rapidly deployable surveillance systems.
Financial Health
StableStable · Hiring · 41% CAGR over 4y
Location
3-Sci Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and manufactures industrial monitoring systems and sensors for harsh environments, including wireless corrosion monitoring, electromagnetic fluid profiling, and temperature and magnetic…
Serves B2B industrial operators and innovation teams in processing industries, offshore wind, fusion energy and other harsh-environment infrastructure, including multinational companies seeking asset…
Financial Health
StableStable · -5% CAGR over 4y
Location
SYNAPSYS SOLUTIONS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops hardware and software for smart building management, including systems integration devices, energy monitoring platforms, lighting control, data acquisition interfaces, and tenant energy…
Serves B2B customers involved in commercial and residential buildings: systems integrators, property owners, facilities managers and OEMs across corporate, data centre, education, healthcare,…
Financial Health
HealthyHealthy · 2% CAGR over 2y
Location
T-Mac Technologies Limited
Trajectory
4y · 2022–NowFinancial 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
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops hardware and software platforms for monitoring and managing heat networks, gas boilers and heat pumps. Provides data capture devices, analytics software and remote configuration tools that…
Serves B2B customers including residential developers, heat network operators, heat suppliers, and metering and billing providers responsible for communal heating schemes in housing developments and…
Financial Health
StableStable · 0% CAGR over 2y
Location
SALTO SYSTEMS LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops and supplies electronic access control and identity management systems for buildings. Offers smart locks, electronic cylinders, wall readers, cloud-based access platforms, face-recognition…
Serves B2B and public-sector buyers managing building access, including facilities and security teams in education, healthcare, hospitality, retail, residential, workspaces, critical infrastructure,…
Financial Health
StrongStrong · Hiring · 7% CAGR over 3y
Location
OGIER ELECTRONICS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies radar-based security and safety systems for perimeter protection and highways, including stopped‑vehicle and incident detection. Also provides microwave wireless links for CCTV,…
Serves B2B and public-sector buyers responsible for security and transport safety, including critical infrastructure, airports, utilities, highways authorities, rail operators, solar farms, and…
Financial Health
StableStable · -4% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies digital telecare and tenant engagement systems for housing, health and social care providers. Products include touchscreen communication devices, daily occupancy check services,…
Serves social housing, retirement living, health and social care organisations, including housing teams, hospital discharge services and domiciliary care providers, plus families and individuals…
Financial Health
HealthyHealthy · Growing, Hiring · 5% CAGR over 4y
Location
WONDRWALL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies AI-powered home energy management systems that control heating, batteries, hot water, EV charging and solar generation, optimising household energy use based on tariffs, weather…
Serves housebuilders developing net zero ready homes and homeowners seeking lower-energy living, with additional partner channels for residential battery and home energy products.
Financial Health
StableStable · -62% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures micro-location hardware and software platforms for location-based digital services. Provides product design, electronics engineering, cloud infrastructure, and deployment for…
Serves public sector bodies, city infrastructure operators and built-environment organisations seeking digital services for urban infrastructure and public spaces, including private or government…
Financial Health
DistressedDistressed
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides metering hardware, IoT data collection systems and software for heat networks and district heating. Delivers installation, commissioning, maintenance and customer billing services, including…
Serves social housing providers, private landlords, managing agents, utilities, contractors, consultants and OEMs involved in communal or district heat networks and metering/billing operations.
Financial Health
StableStable · -65% CAGR over 4y
Location
Sensoteq Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops wireless sensors and monitoring systems for industrial equipment. Provides devices and a cloud analytics platform that collect vibration and condition data to support remote machine health…
Serves B2B industrial operators, maintenance and reliability teams, and service providers managing machinery across manufacturing, processing and other industrial applications in multiple countries.
Financial Health
HealthyHealthy · Hiring · 22% CAGR over 4y
Location
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How UK IoT devices companies work and how to sell to them
What they do
IoT-device firms usually earn from a blend of hardware margin, deployment services and recurring software fees. Revenue may start with sensors, gateways, controls or embedded modules, then continue through device-management subscriptions, monitoring dashboards, firmware maintenance, data access and support contracts. Consumer-oriented firms often rely on distributors and channel margin, while commercial and industrial suppliers are more likely to price around a site, fleet or project. The commercial model is therefore not pure hardware or pure software: buyers often expect device accountability, update commitments and support capacity to sit with the same supplier.
Who they sell to
Most sell into operations, IT, security and product teams, with procurement involved once devices move beyond trial units. Commercial buyers tend to include operations directors, facilities leads, CTOs, heads of security, engineering managers and product leads embedding connectivity into their own equipment. Smaller customers may buy through resellers or direct sales after a short pilot; larger commercial, industrial and public-sector buyers typically require technical evaluation, security review and procurement sign-off. Contract size varies with the number of sites, connected units and support obligations, so sales cycles often lengthen when integration work or service-level terms matter.
What they buy
Most IoT-device firms tend to spend on embedded engineering, firmware testing, cloud hosting, connectivity, device-management tooling, security assessment and customer support operations. Firms with channel sales also need CRM, partner management, billing, returns handling and product-documentation systems. Compliance work creates demand for legal advice, product-security audits, vulnerability-reporting processes and technical writing around update periods and user guidance. As fleets grow, spending shifts towards observability, remote diagnostics, data pipelines, identity and access management, and field-service coordination. Recruitment support is usually most relevant where firms need firmware, hardware, cloud and security skills in the same team.
Why and how to sell to them
IoT-device buyers tend to evaluate suppliers when a pilot turns into an installed fleet, a product moves into retail distribution, or a commercial customer asks harder questions about support, uptime and security updates. Product-security duties also give sellers a clear reason to discuss audit trails, password design, vulnerability handling and update disclosure. Margin pressure is another practical angle: fewer site visits, lower return rates and clearer support workflows matter when hardware issues turn into service costs. Outbound messages usually land better when tied to fleet growth, new channel activity, procurement readiness or the operational burden of maintaining connected devices after shipment.
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.
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