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Broadband Companies in London: 400+ Active Firms (2026)
Broadband companies build, operate and resell fixed internet and cable connectivity, with this cohort based across London.
Commercial demand tends to sit with property teams, IT managers, facilities managers and channel partners rather than a uniform technology buyer. London operators in this cohort usually sell recurring access, installation and managed connectivity around offices, residential blocks, public sites and local business estates. Engagements range from individual premises installs to portfolio-wide landlord contracts and wholesale or reseller arrangements, with support, uptime and customer premises equipment often bundled into the relationship. The buyer profile is therefore mixed: household-facing providers need local service density, while business and wholesale providers depend more on service-level assurance, installation capacity and contract renewals.
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London has 487 actively trading broadband companies in this cohort, making it a relatively concentrated list rather than a national roll-up. Reported employment totals 960 people, which points to a market with many specialist service providers and a smaller number of employers with larger operating teams. Turnover scale is also uneven, with 11 reporting more than £5M, so the list is not just micro-resellers, but neither is it dominated by large infrastructure owners. The capital’s density matters because local customer acquisition, installation scheduling and landlord access can decide whether recurring contracts are economical.
Fixed connectivity sits in a rule-bound operating context even when the provider is asset-light. Household-facing services carry expectations around contract clarity, complaints handling, service restoration and switching, while business connectivity is more often governed through service-level terms, installation windows and penalties for downtime. Network build and upgrade work also depends on permissions, street works coordination and access to multi-tenant buildings, which can be harder to secure in dense London locations. For resellers and wholesale users, the key commercial exposure is often upstream capacity pricing and fault resolution rather than direct ownership of ducts or fibre.
The cohort appears likely to stay fragmented, with asset-light resellers, installation-led specialists and operators with some network ownership sitting alongside each other. Early-commercial providers can enter through niche geographies or channel relationships, but moving beyond local density tends to require repeatable installation processes, dependable support and access to wholesale capacity on workable terms. Consolidation may therefore be more attractive where providers share borough coverage, landlord relationships or customer types. Competitive pressure is likely to come less from novel software and more from service reliability, pricing discipline and the ability to handle faults without losing customers.
487
Active firms
2026
11
Above £5M
reported revenue
118
New since 2022
recent incorporations
Key facts
About 2% of the trading cohort reports turnover above £5M (11 of 487 firms) — the rest sits below that revenue band.
24% of the cohort was incorporated since 2022 (118 firms), so a sizeable share is in its first few filing cycles.
Fixed broadband activity spans infrastructure-owning operators, cable and fixed-line providers, and resellers of internet connectivity.
London concentrates buyers with dense connectivity needs, including households, offices and multi-site businesses.
Reseller-led models mean some broadband companies sell connectivity without owning the underlying network assets.
Top London broadband companies
T.L.C. MAINTENANCE LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides telecommunications services including network and data cabling installation, VoIP phone systems, business internet connectivity and leased lines. Also offers voice and data hosting, system…
Serves mainly small businesses and larger commercial customers in South West and Central London, with some residential customers and home workers needing telecoms support.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
VIR2UE COMMUNICATIONS LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides business telecommunications and IT services including managed data connectivity, broadband, SD‑WAN and Wi‑Fi, hosted VoIP and SIP voice services, Microsoft Teams telephony integration,…
Serves businesses of all sizes, including organisations with office, mobile, contact centre and Microsoft Teams communications needs, with emphasis on London and UK business customers.
Financial Health
HealthyHealthy · -6% CAGR over 2y
Location
BLACKBOX VOICE AND DATA SOLUTIONS LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and unified communications services, including hosted telephony, business mobile plans, broadband connectivity, voice and data networks, Microsoft integration,…
Sells to UK businesses, especially in London, Kent and the Home Counties, including office-based, remote-working and multi-site organisations seeking managed telecoms, connectivity and security…
Financial Health
StableStable · Hiring · 11% CAGR over 4y
Location
FIBER INTERNET LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides wholesale telecommunications network services, including carrier Ethernet, private line circuits, dedicated internet access, IP VPN, wavelength transport, and voice interconnection. Also…
Sells to businesses on a wholesale basis, including carriers, internet service providers, resellers, content providers, data centre operators and system integrators needing voice, data, internet and…
Financial Health
WeakWeak · -10% CAGR over 4y
Location
FastNet
Provides business internet connectivity and hosting services, including fibre and ADSL broadband, dedicated gigabit ethernet, domain registration, web and data centre hosting, cloud and dedicated…
Serves UK businesses, from home offices and smaller firms to medium-sized users, larger multi-site organisations and public sector bodies needing connectivity, hosting and related internet services.
Location
NETCALIBRE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides fibre-based internet connectivity for commercial buildings, installing network infrastructure that enables tenants to access dedicated business broadband from multiple carriers. Also offers…
Serves commercial landlords, property managers and office tenants in commercial buildings, plus businesses with multiple sites across the UK.
Financial Health
HealthyHealthy · -64% CAGR over 4y
Location
Colt Technology Services
Provides enterprise telecommunications and digital infrastructure services, including fibre connectivity, Ethernet and IP networking, dedicated internet access, WAN and SD‑WAN, SIP and unified…
Serves B2B enterprise, mid-market and wholesale customers, including capital markets, manufacturing, pharma, retail, defence, transport and logistics organisations, plus resellers, cloud providers…
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides telecommunications services including home and business broadband, landline and VoIP telephony, mobile SIM plans, and international call packages. Also sells subscriptions for streaming…
Serves UK households and small businesses, especially Greek and Cypriot communities or customers needing communications links with Greece and Cyprus, plus worldwide viewers of Greek and Cypriot TV.
Financial Health
WeakWeak · -6% CAGR over 3y
Location
FUSION FIBRE GROUP LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides full fibre broadband services for residential and business customers, including gigabit-capable internet packages, business broadband, leased lines, VoIP landlines and IT solutions. Partners…
Serves UK households and businesses, including small and large homes, business users, property and facility managers, new-build developers, wholesale networks, and channel or sales partners.
Financial Health
StrongStrong · Growing, Hiring · 124% CAGR over 4y
Location
euNetworks
Operates fibre‑optic network infrastructure across Europe, providing dark fibre, metro and long‑haul wavelength services, Ethernet and internet connectivity, colocation, and cloud connectivity…
Serves B2B telecoms and connectivity buyers across Europe, including wholesale carriers, financial services firms, media and content companies, mobile operators, data centres, enterprises, and…
Location
Colt Technology Services
Provides enterprise telecommunications and digital infrastructure services including fibre connectivity, Ethernet, IP VPN, internet transit, SIP trunking, unified communications, cloud connectivity,…
Serves enterprises, mid-market and high-growth businesses, wholesale carriers/resellers and cloud providers, with sector focus on capital markets, manufacturing, pharma, retail, defence, and…
Location
Colt Technology Services
Provides digital infrastructure and telecommunications services, including fibre connectivity, dedicated internet access, wide area networking, SIP trunking, unified communications, cloud hosting,…
Serves enterprises, mid-market and high-growth businesses, wholesale/reseller telecom buyers and cloud providers, with sector focus on capital markets, manufacturing, pharma, retail, defence, and…
Location
FLEXGRID LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business connectivity services including carrier‑diverse Ethernet, full‑fibre (FTTP/FTTC) broadband, cellular M2M and IoT SIM connectivity, satellite links, and managed SD‑WAN networking.…
Sells to UK businesses, especially modern enterprises with multi-site networks and demanding connectivity needs. Targets organisations seeking Ethernet, FTTP, cellular, satellite and SD-WAN services,…
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
Builds and operates full‑fibre broadband network infrastructure, providing gigabit-capable connectivity to homes, businesses and public sector sites. Supplies wholesale fibre access to internet…
Serves UK households, businesses, public sector bodies and landlords seeking full-fibre broadband access, and works with broadband, mobile and public-sector partners that use its network to reach end…
Location
Provides residential and business fibre broadband services and develops IoT connectivity solutions for utilities, cities, buildings and homes. Works with councils, landlords and enterprises to deploy…
Serves UK households, businesses, public sector bodies, local councils, landlords, building asset management companies, utilities and smart city projects.
Location
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides business telecommunications services including call and line rental, business telephone systems, mobile voice and data plans, and data connectivity such as broadband, Ethernet and MPLS WAN.…
Serves B2B customers, from SMEs to enterprises and corporates, including multi-site businesses and mobile workforces, primarily in London and the South East and across the UK.
Financial Health
WeakWeak · -29% CAGR over 2y
Location
Trajectory
1y · 2021–NowBuilds and operates full‑fibre broadband infrastructure, providing high‑speed fibre connectivity to homes, businesses and public sector sites. Supplies wholesale network access to internet service…
Serves UK households, businesses, public sector organisations, landlords, and broadband or mobile providers in areas covered by its full fibre network.
Financial Health
Insufficient historyInsufficient history
Location
Provides full‑fibre broadband internet services to residential and business customers, offering high‑speed connections with symmetrical upload and download speeds via fibre‑optic network…
Serves residential households and business customers seeking full-fibre internet packages, including consumers comparing broadband deals and organisations using business customer terms.
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides full‑fibre broadband services delivering gigabit internet to residential properties, particularly new‑build and build‑to‑rent developments. Installs and operates fibre networks, supplies…
Serves residents in new-build homes and apartment blocks, alongside property developers, build-to-rent operators and wholesale partners seeking connectivity for developments across the UK.
Financial Health
StrongStrong · Hiring · 26% CAGR over 2y
Location
GOLD TELECOM LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications services including hosted VoIP phone systems, SIP trunking, non‑geographic numbers, broadband and fibre connectivity, leased lines, and line rental and call…
Serves UK businesses, schools, charities and public sector organisations, from blue-chip companies to small single-office operations, including teams with office-based and home-working staff in…
Financial Health
StableStable · -70% CAGR over 4y
Location
COMMUNICATIONS CENTRAL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications systems including IP telephone systems, fibre internet connectivity, Wi‑Fi networks, video conferencing and meeting room technology. Also offers installation,…
Serves office-based businesses in central London, including professional services, creative firms and multi-site organisations with staff requiring business communications, remote-working and…
Financial Health
StableStable
Location
SPITFIRE NETWORK SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and internet services including VoIP and SIP voice connectivity, fibre broadband, Ethernet and dedicated circuits, hosted PBX, mobile and IoT connectivity, and…
Serves SMEs, larger businesses, telecoms/channel partners and public sector organisations procuring connectivity and voice services, including buyers needing managed WAN, IoT and SIP/VoIP.
Financial Health
DistressedDistressed · -69% CAGR over 4y
Location
CROWN NETWORK LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides network connectivity and IT infrastructure services including broadband and wireless access, leased lines, VPNs, satellite connectivity, SD‑WAN, data centre hosting, and network design,…
Serves businesses and homes needing broadband connectivity, plus companies with remote branches, data centres or hosted infrastructure requirements, including customers requiring managed network…
Financial Health
WeakWeak
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, builds and operates wireless telecommunications infrastructure, including outdoor small‑cell networks, indoor mobile coverage systems, public Wi‑Fi and private networks. Provides…
Serves mobile network operators, MVNOs, international roaming operators, local authorities, commercial real estate owners, property managers, enterprises and wholesalers needing wireless…
Financial Health
WeakWeak
Location
hSo
Provides business internet connectivity and managed IT services, including leased lines, WAN and SD‑WAN networks, cloud hosting, AWS and Azure management, Microsoft 365 migration, VoIP…
Serves UK businesses, charities, education providers and public sector bodies needing connectivity, cloud and IT security support, with partner and wholesale routes for resellers.
Location
Colt Technology Services
Provides enterprise telecommunications and digital infrastructure services, including fibre connectivity, internet access, WAN networking, SIP voice, cloud connectivity, colocation, and managed…
Serves enterprise, mid-market and high-growth businesses, resellers and wholesale carriers globally, with sector focus on capital markets, manufacturing, pharma, retail, defence, and transport and…
Location
Builds and operates full‑fibre telecommunications infrastructure, providing wholesale broadband network access to internet service providers. Enables residential, business and public sector…
Serves a mix of UK households, businesses, public sector bodies, landlords, broadband providers and mobile operators seeking access to a full fibre broadband network in rollout areas.
Location
Inifi Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides high‑speed internet connectivity for commercial properties and flexible office spaces. Designs, installs and manages network and Wi‑Fi infrastructure, and offers connectivity consultancy to…
Serves B2B customers in the property sector, including commercial real estate managers, landlords, building managers, flex-space operators and businesses moving into workspaces, especially Cat A+…
Financial Health
StrongStrong · Growing, Hiring · 37% CAGR over 4y
Location
Builds and operates full‑fibre broadband infrastructure, providing high‑capacity fibre networks used by internet service providers to deliver broadband connectivity to homes, businesses, public…
Serves UK households, businesses, public sector organisations and landlords seeking full fibre connectivity, and partners with broadband providers and mobile operators that use its network.
Location
Worldnet Global Communications Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides telecommunications services for businesses including mobile plans, broadband and leased-line connectivity, VoIP and SIP phone systems, and Internet of Things solutions, along with telecom…
Serves UK businesses needing telecoms and connectivity support, including organisations with mobile teams, remote workers, VoIP users, IoT requirements, or leased-line broadband needs.
Financial Health
WeakWeak · 0% CAGR over 3y
Location
Builds and operates full‑fibre broadband infrastructure and provides wholesale network access to internet service providers, carriers, and mobile network operators, enabling partners to deliver…
Serves ISP partners, carriers, mobile network operators, local authorities and landlords seeking wholesale full-fibre access for residents and businesses in selected UK towns.
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsBuilds and operates full‑fibre broadband infrastructure and provides wholesale network access to internet service providers, carriers and mobile operators. Connects residential and business premises…
Sells wholesale to ISP partners, carriers, mobile network operators, local authorities and landlords. Serves businesses and residents indirectly via partners, with emphasis on smaller towns and…
Financial Health
StableStable · 0% CAGR over 1y
Location
Builds and operates full‑fibre broadband infrastructure, providing wholesale network access to internet service providers that deliver gigabit internet connectivity to homes, businesses and public…
Serves UK households, businesses, public sector organisations and landlords seeking full fibre broadband access, via partner broadband providers. Targets both consumers and organisational buyers in…
Location
Builds and operates full‑fibre broadband infrastructure, providing wholesale network access to internet service providers that deliver high‑speed connectivity to homes, businesses, public sector…
Serves UK households, businesses, public sector organisations and landlords, and partners with broadband providers and mobile operators seeking full-fibre network access.
Location
OPTINET U.K. LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides business network connectivity and managed services, including fibre and Ethernet connectivity, cloud connectivity, enterprise interconnection (NNI), and zero‑loss failover solutions. Designs…
Serves UK businesses and property/building operators, including enterprises, contact centres, multi-tenant buildings and organisations with high-availability communications requirements.
Financial Health
HealthyHealthy · Hiring · 22% CAGR over 2y
Location
Builds and operates full‑fibre broadband infrastructure, providing wholesale fibre network access to internet service providers, businesses and public sector organisations, enabling high‑speed…
Serves UK households, businesses, public sector organisations and landlords, as well as broadband providers and mobile partners using its network to reach end customers.
Location
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsBuilds and operates a wholesale full‑fibre telecommunications network that connects homes, businesses and public sector sites. Provides fibre infrastructure and platform services used by internet…
Serves UK residential consumers, businesses, public sector organisations, landlords, mobile operators and broadband providers, including partner ISPs selling broadband to homes and commercial…
Financial Health
WeakWeak
Location
Brightstar Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides business internet connectivity and communications services including leased lines, broadband, VPN, IP transit, VoIP telephony, and managed email. Also offers cloud hosting, colocation,…
Sells to UK businesses needing connectivity and communications services, from SMEs with a handful of staff to large enterprise and blue-chip organisations with 1,000+ users. Targets business buyers…
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
euNetworks
Operates and provides fibre-based telecommunications infrastructure and connectivity services, including dark fibre, metro and long-haul wavelength services, Ethernet and internet connectivity,…
Serves B2B customers across Europe, including wholesale carriers, financial firms, media and content companies, mobile operators, data centres, enterprises, alternative network providers, and…
Location
Provides residential broadband services using full‑fibre optic networks. Offers high‑speed internet packages with speeds up to multi‑gigabit levels, installation by engineers, customer support, and…
Targets residential consumers and households seeking full-fibre home broadband, including existing broadband users switching provider and customers prioritising high-speed, reliable internet for…
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides residential broadband services, offering full‑fibre and fibre internet packages with speeds up to 1 Gbps. Enables customers to check availability, switch providers, manage accounts, and…
Sells to residential consumers and households seeking home broadband, including fibre and full-fibre packages for everyday browsing, streaming and gaming.
Financial Health
StableStable
Location
Purple Unified Communications Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based telecommunications and connectivity services for businesses, including VoIP phone systems, Microsoft Teams telephony integration, broadband and leased line internet, business…
Serves businesses needing telecoms and connectivity support, including office-based, mobile and remote teams, contact centres, and organisations managing connected devices or IoT deployments.
Financial Health
HealthyHealthy · Hiring · 50% CAGR over 4y
Location
EX NETWORKS LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides data centre infrastructure and network services including server colocation, IP transit and MPLS connectivity, and VMware‑based virtual data centre cloud platforms. Also delivers managed IT…
Serves UK businesses, IT teams and infrastructure project managers needing colocation, connectivity and cloud capacity across London and UK data centres, from single-server users to organisations…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
TYCAN LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides telecommunications services including fibre optic network installation, hosted VoIP telephony, and business connectivity solutions. Also offers network security measures, infrastructure…
Serves B2B customers, especially businesses and enterprises needing scalable telecommunications, fibre connectivity, hosted voice, network security and technical support for business continuity.
Financial Health
WeakWeak · -55% CAGR over 2y
Location
Colt Technology Services
Provides enterprise digital infrastructure services including fibre connectivity, internet access, Ethernet and WAN networking, SIP and unified communications, cloud connectivity and storage,…
Serves enterprise, mid-market and high-growth businesses, plus wholesale/reseller customers and cloud providers, across sectors including capital markets, manufacturing, pharma, retail, defence, and…
Location
Colt Technology Services
Provides enterprise telecommunications and IT infrastructure services including fibre connectivity, internet access, WAN and SD‑WAN networking, SIP trunking and cloud voice, colocation, managed…
Targets enterprise, mid-market and high-growth organisations, wholesale carriers/resellers and cloud providers, particularly in capital markets, manufacturing, pharma, retail, defence, and transport…
Location
Designs, builds and operates full‑fibre telecommunications infrastructure, providing wholesale broadband network access to internet service providers that deliver connectivity to residential,…
Serves UK households, businesses, public sector organisations and landlords in network rollout areas, plus broadband, consumer, public sector and mobile service provider partners.
Location
Colt Technology Services
Provides digital infrastructure and telecommunications services for enterprises, including fibre network connectivity, dedicated internet access, WAN solutions, SIP trunking and cloud-based voice,…
Serves B2B customers including enterprises, mid-market and high-growth firms, wholesale carriers/resellers and cloud providers, with sector focus on capital markets, manufacturing, pharma, retail,…
Location
Provides full‑fibre optic broadband services to residential and business customers, offering high‑speed internet packages with symmetrical upload and download speeds, unlimited data, and network…
Sells to UK households and businesses in areas covered by its network, including customers switching providers and organisations comparing broadband or leased-line packages.
Location
Provides international telecommunications and data network services including IP transit, Ethernet and VPN connectivity, global private networks, internet access, colocation, cloud connectivity and…
Serves B2B customers including system integrators, telecom and internet service providers, cloud/digital businesses, and enterprises with offices, manufacturing, distribution or retail sites needing…
Location
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How London broadband companies work and how to sell to them
What they do
Revenue usually combines recurring connectivity fees with installation charges, equipment supply, maintenance and managed support. Household-facing offers are closer to monthly subscription contracts, while business and landlord-led work often bundles access, service-level cover, customer premises equipment and engineer call-outs. Asset-light providers make margin on wholesale capacity and support, whereas operators with their own network footprint have heavier build, maintenance and access costs. A single-premises order can be low-touch, but portfolio deals usually depend on site surveys, wayleave permissions, installation planning and a clear handover from sales into operations.
Who they sell to
Buyers vary by route to market. Residential providers typically sell through local direct marketing, comparison-led demand and referral channels, while business connectivity is more likely to involve IT managers, operations directors, facilities managers and procurement teams. Landlord and managing-agent work brings property directors and building managers into the decision. Public sites and larger commercial estates tend to use formal procurement or RFP-style processes, with longer cycles and more emphasis on service levels. Smaller business contracts can close through inside sales, but wholesale and partner-led arrangements usually need account management, technical scoping and renewal discipline.
What they buy
Spend tends to follow the operational path from order capture to installation, billing and fault handling. Broadband firms commonly need CRM, billing, payment collection, customer support, ticketing, field-service scheduling, workforce management and customer-portal software. Network-facing teams may buy monitoring, observability, security, cloud hosting, inventory tools, asset management and reporting systems to track availability and engineer activity. Service providers also use finance and accounting support, recruitment for technical and customer-service roles, local marketing, contract review and legal help around landlord access agreements. London operators with mixed residential and business demand often value tools that connect sales promises to installation capacity.
Why and how to sell to them
Commercial intent often shows up when providers add borough coverage, sign a landlord or wholesale arrangement, bring support in house, hire engineers, or see rising ticket volumes and missed installation windows. Common pain points include churn after service faults, manual billing, weak visibility over engineer schedules, margin pressure from upstream capacity costs and slow resolution where several parties touch the same connection. Outbound angles tend to land better when they speak to fewer failed appointments, faster cash collection, clearer service-level reporting or lower support workload. Operations, finance and commercial leaders are usually better entry points than a generic technology contact.
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.
Also in London
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Frequently asked questions
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