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iGaming Companies in London: 100+ Active Firms (2026)
iGaming companies in London operate licensed betting, casino, bingo, lottery or gambling-software services for digital and retail markets.
Buying centres tend to sit in trading, product, compliance, payments, data and platform operations, rather than a single IT department. Consumer-facing operators sell to retail gambling customers, but their commercial counterparties are usually mid-market and enterprise partners: platform suppliers, game studios, payment and identity services, affiliates, media buyers and outsourced support functions. Engagements are rarely lightweight software trials; they often involve licensing exposure, revenue-share economics, operational integration and management oversight from a London base serving Great Britain and overseas markets.
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London has 182 actively trading iGaming firms, making this a compact cohort rather than a broad software universe. Reported employment totals 1,333 staff, which points to a market of specialist operating bases, compliance teams and commercial offices rather than only remote shell entities. The revenue distribution is top-heavy: 24 companies report turnover above £5M, while 34 have been incorporated since 2022. That mix fits London’s role as a management, licensing and international sales base for businesses serving Great Britain and overseas markets.
Great Britain’s gambling market is organised around the Gambling Commission’s licensing regime. Its Licence Conditions and Codes of Practice set the conditions licensees must meet to hold a licence, with category coverage spanning betting, bingo, casino, gaming machines and gambling software, lotteries and personal licences. London operators therefore tend to treat compliance as part of the operating model, not an after-the-fact legal review. Regulatory returns also matter commercially, because licensed-operator reporting feeds the Commission’s official industry statistics and gives the market a public benchmark for activity.
London’s cohort appears likely to remain split between regulated operators with established licences and smaller suppliers orbiting casino, betting and lottery workflows. Compliance costs tend to favour businesses that already have legal, product and reporting capacity, while new entrants need a clearer route through licensing and distribution than a generic consumer app would. Consolidation also looks plausible where platform costs, customer-acquisition pressure and tighter supervision make sub-scale operations less attractive. The firms that endure are likely to be those with disciplined market access, well-understood software supply relationships and governance that can survive scrutiny from regulators and commercial partners.
182
Active firms
2026
24
£5M+ turnover
London iGaming companies
34
Newer incorporations
Incorporated since 2022
Key facts
About 13% of the trading cohort reports turnover above £5M (24 of 182 firms) — the rest sits below that revenue band.
18% of the cohort was incorporated since 2022 (34 firms), so a sizeable share is in its first few filing cycles.
Gambling and iGaming operators in Great Britain sit under the Gambling Commission’s licensing regime, with Licence Conditions and Codes of Practice covering betting, bingo, casino, gambling software, lotteries and personal licences.
The customer-facing gambling industry in Great Britain generated £16.8 billion in gross gambling yield from April 2024 to March 2025, up 7.3% year on year.
Remote casino, betting and bingo generated £7.8 billion in gross gambling yield from April 2024 to March 2025, up 13.1% year on year.
Online casino games accounted for £5.0 billion, remote betting £2.6 billion and remote bingo £165.6 million within the remote gambling total.
Europe’s gambling market, including the EU-27 and UK, reached €123.4 billion in gross gaming revenue in 2024, with online gambling at €47.9 billion or 39% of revenue.
Top London iGaming companies
Operates licensed online lottery and instant‑win games, selling tickets and digital scratchcards through the Health Lottery platform. Generates revenue from player entries and allocates a portion of…
Sells to adults aged 18+ in Great Britain who play lottery draws, instant-win games and online scratchcards, including online, app, retail and syndicate players.
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsOperates online gaming and casino brands and develops iGaming platform technology. Provides turnkey services for partners including licensing support, platform operations, marketing, and joint…
Serves online casino players in regulated and emerging regulated markets worldwide, plus B2B iGaming partners including operators, brand licensees, joint venture partners and marketing-led companies.
Financial Health
DistressedDistressed
Location
Operates sports betting and gaming brands, providing online and retail wagering, casino and bingo games. Develops and manages iGaming platforms, sports trading services, and digital betting products…
Serves adult consumers in regulated sports betting and gaming markets, targeting online and retail bettors, casino, bingo and gaming customers through multiple local brands across over 30 markets.
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsOperates online sports betting and iGaming businesses through brands such as Betway, providing sportsbook and casino platforms. Manages brand development, partnerships with sports teams and leagues,…
Serves adult consumers in regulated online sports betting and iGaming markets, plus commercial partners such as sports teams, leagues and entertainment brands.
Financial Health
HealthyHealthy · Hiring · 39% CAGR over 3y
Location
Rednines Gaming Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsOperates online sports betting and casino gaming platforms using in‑house developed technology. Provides sportsbook wagering and a library of more than 500 games, including slots, progressive…
Sells B2C to adult consumers in the UK online gambling market, including sports bettors and casino game players who use mobile, tablet and desktop platforms.
Financial Health
DistressedDistressed · 22% CAGR over 2y
Location
Develops and supplies software platforms and content for online and retail gambling operators, including player account management systems, sportsbook technology, casino and live dealer games, poker…
Sells to B2B gambling operators worldwide, including online, mobile and retail betting, casino, poker and bingo brands operating across regulated jurisdictions.
Location
Everymatrix Technology (UK) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops software platforms for online gambling operators, including sportsbook, casino aggregation, player account management, payments, affiliate management and data services. Provides turnkey and…
Sells B2B to regulated iGaming, sports betting and lottery operators, including tier‑1 online casino/sportsbook brands, state-owned gambling operators and affiliates in regulated markets.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
Operates and supplies lottery and gaming services, including national lotteries, instant win games, scratch cards, iGaming, sports betting and casino products. Partners with and runs state-licensed…
Serves adult consumers in regulated lottery, gaming and betting markets, alongside public-sector lottery bodies and retail lottery partners in markets including the UK, Europe and North America.
Location
Eeze Entertainment (UK) Limited
Trajectory
4y · 2022–NowDevelops and supplies B2B iGaming software and live casino products, including live dealer games, slot titles, and integration platforms. Provides operator tools such as game clients, gamer servers,…
Serves B2B iGaming operators, online casinos and betting brands in regulated markets seeking branded live casino, slots and player engagement products for their players.
Financial Health
Insufficient historyInsufficient history
Location
LOGIFUTURE (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies iGaming software and services for betting operators, including sportsbook platforms, virtual sports products, and casino-style games. Also provides fraud management, payment…
Serves B2B iGaming operators, sportsbooks, bookmakers and gaming platforms, including established global brands seeking partner products for betting, virtual sports and online casino audiences.
Financial Health
WeakWeak · -47% CAGR over 4y
Location
PUSH GAMING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies online casino games, particularly slot titles, to betting and gaming operators. Designs mobile‑optimised games with proprietary features and integrates its game portfolio into…
Serves licensed online betting and gaming operators, including casino brands and platform partners, targeting adult players in regulated markets such as Great Britain, Malta and Spain.
Financial Health
StrongStrong · Hiring · 42% CAGR over 4y
Location
ANNEXIO MARKETING SERVICES (UK) LIMITED
Trajectory
4y · 2019–NowFinancial sub-scores
Computed from 4 filingsProvides marketing services for online gambling and lottery betting platforms within its corporate group, supporting promotion of brands offering lottery betting, online casino games, slots, and…
Serves online betting operators within its group and consumer gamblers using lottery betting, slots, casino and scratchcard brands, with licensed markets including Great Britain, Ireland and…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 11% CAGR over 5y
Location
Operates online lottery and instant‑win games, including daily draws and number‑based games. Sells tickets to players and allocates a portion of proceeds to a foundation that distributes grants to…
Targets adults aged 18+ in Great Britain who buy lottery draw tickets, online scratchcards and instant-win games, including individual players and syndicates.
Location
Develops and supplies software platforms and content for the online and retail gambling industry, including casino games, live dealer systems, sportsbook technology, poker and bingo platforms, player…
Serves B2B gambling and iGaming operators, including regulated online, mobile and retail betting, casino, poker and bingo businesses worldwide.
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsOperates white‑label online casino and sportsbook brands and provides a game aggregation platform for the iGaming industry, integrating titles from multiple game providers and managing a portfolio of…
Serves online gambling consumers through casino and sportsbook brands, plus B2B iGaming operators and game providers involved in white-label casino, sportsbook and game aggregation partnerships.
Financial Health
WeakWeak · -12% CAGR over 1y
Location
Kalooki Sportsbook Limited
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsOperates an online sportsbook offering sports betting via WhatsApp, phone and messaging. Accepts bets on horse racing, football and other sports, including singles and multiples, with live in‑play…
Serves adult consumers in Great Britain who bet on sports via WhatsApp, phone or Telegram, including horse racing and football bettors and high-staking punters seeking account-based betting.
Financial Health
HealthyHealthy · Hiring · 27% CAGR over 3y
Location
Provides technology, systems and services for government and commercial lottery operators, including retail terminals, self-service vending, digital lottery platforms, game development, instant…
Targets state and national lottery operators, regulated gaming organisations and their commercial lottery teams worldwide, across retail, digital, instant-ticket and iLottery channels.
Location
Gaming Corps UK Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops online casino and iGaming software, producing digital games such as video slots, Plinko, multiplier and table games. Supplies game content and titles to online casino operators and gaming…
Serves online casino operators, iGaming platforms and distribution partners seeking slot, table, multiplier and other casino game content for regulated markets worldwide.
Financial Health
StableStable · 0% CAGR over 1y
Location
GLOBAL MUTUEL (UK) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies technology platforms for the pari‑mutuel and betting industry, including online wagering systems, on‑course betting terminal software, totalisator (tote) engines, and…
Serves B2B operators in the pari-mutuel betting and racing sector, including tote/pool wagering businesses, online wagering platforms, on-course betting operations and organisations needing…
Financial Health
StableStable · 0% CAGR over 4y
Location
Owns and operates the Tote, a pool betting (pari‑mutuel) operator for horse racing. Provides betting products such as Placepot and manages pooled wagering platforms and partnerships with racing…
Serves racing fans and bettors in the UK and internationally, alongside horseracing stakeholders such as racecourses, racing authorities and pool-betting operators.
Location
Atlantic Digital Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDevelops online slot and casino games for the iGaming industry, including branded titles based on film and television franchises. Designs game mechanics, artwork and user interfaces, and supplies…
Sells to online casino and iGaming operators seeking branded slot and casino game content based on film and TV IP, targeting partners that need titles to engage and retain players.
Financial Health
WeakWeak · -42% CAGR over 2y
Location
Operates and supplies lottery and gaming services, including national lottery operations, instant win and scratch games, sports betting, and online gaming. Provides retail and digital platforms and…
Serves adult consumers in lottery, gaming and betting markets, alongside public-sector and state-run lottery partners seeking lottery operation or supplier support.
Location
Begame Digital Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, develops and operates online gaming systems and websites for freemium and premium markets. Provides an in‑house gaming platform, game development studio, and affiliate marketing network used…
Targets online gaming consumers in freemium and premium segments, plus B2B customers including third-party gaming operators, gaming websites and affiliate partners in the online gaming industry.
Financial Health
DistressedDistressed · -2% CAGR over 4y
Location
Develops and supplies casino gaming content and technology, including land‑based slot machines, gaming hardware and management systems, online real‑money gaming platforms, iLottery solutions, and…
Serves casino operators, regulated online real-money gaming and iLottery operators, and other gaming businesses, while also reaching consumers worldwide through free-to-play social casino and mobile…
Location
Clearstake Limited
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides a customer due diligence and identity verification platform that uses bank-sourced data via API to assess identity, affordability and source of funds. Enables businesses to automate KYC…
Sells to online gambling and gaming operators, especially compliance, risk and customer operations teams responsible for player onboarding, affordability checks, source-of-funds reviews and ongoing…
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
Develops and publishes gaming content and technology, including land‑based casino machines, gaming hardware and management systems, online real‑money gaming platforms, iLottery products, and…
Serves both B2B gaming operators in regulated land-based casino, online real-money gaming and iLottery markets, and direct-to-consumer mobile/social casino players worldwide.
Location
LOGIFUTURE TECH LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops iGaming technology and software for betting operators, including sportsbook platforms, virtual sports products, and online games. Provides related services such as payments integration,…
Serves B2B iGaming operators, sportsbooks and betting brands seeking gaming, virtual sports and platform services for their online gambling customers.
Financial Health
WeakWeak · -60% CAGR over 5y
Location
PLAY'N GO SERVICES LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies digital casino games for online gambling operators, including video slot titles, table games and branded game series. Provides game content and related platform integrations for…
Serves B2B customers in the gambling sector, including regulated online casino operators, land-based casinos and social casino platforms across multiple jurisdictions.
Financial Health
HealthyHealthy · -63% CAGR over 4y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsOperates a chain of adult gaming centres providing slot machine gaming in high street venues. Also offers online gambling services including slot games and bingo, alongside customer loyalty…
Financial Health
DistressedDistressed · -2% CAGR over 3y
Location
Bee-Fee Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops software for online casino and sports betting operators, including gaming platforms, slot games, payment and loyalty systems, and back‑office tools. Also designs bespoke games and…
Targets B2B gambling businesses, including online casino and sportsbook operators, land-based gaming venues, slot machine operators, and affiliate partners looking to serve real-money gaming…
Financial Health
WeakWeak · -16% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates an online gambling platform offering sports betting odds and wagering on sporting events, along with online casino games, live dealer casino, poker, and sports prediction tools through a…
Targets individual online gambling consumers, including sports bettors, casino and live-casino players, poker players and horse-racing bettors, seeking an online sportsbook and gaming account.
Financial Health
WeakWeak
Location
OLIKAONE LIMITED
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides digital media and marketing services for the iGaming sector, including affiliate marketing, PPC advertising, social media management, analytics and content production. Also operates and…
Targets iGaming businesses and partners needing digital customer acquisition support, alongside online casino and social gaming players through its consumer brands, with licences referenced for the…
Financial Health
StrongStrong
Location
ABELSON SPORTS LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides sports betting odds and data services to bookmakers and media companies, including football player market pricing, bet builder markets, and data on televised and streamed sporting events,…
Sells to businesses in the sports betting and media sectors, particularly bookmakers, sportsbook operators and media companies worldwide, including large global operators needing odds, data and…
Financial Health
HealthyHealthy · Growing · 5% CAGR over 2y
Location
SPORTS CONTENT PROVIDER LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides sports data, odds, analytics and audiovisual content platforms for sports betting operators, media companies and sports organisations. Offers live streaming, trading and risk management…
Serves betting and gaming operators, media and technology companies, sports teams, leagues and federations, plus regulators and integrity bodies in the sports, media and betting sectors.
Financial Health
WeakWeak
Location
12th Player Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable
Location
MAVERICK GAMES LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsTargets consumers interested in online casino gaming and sports betting, including prospective players and community members ahead of launch.
Financial Health
StrongStrong · Hiring · 148% CAGR over 1y
Location
RAW IGAMING UK LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops online gambling software and games for the iGaming sector, including slot machines, live casino games, multiplayer Yatzy, arcade-style titles, and networked jackpot features supplied to…
Serves B2B iGaming operators, online casino platforms and gaming aggregators seeking new game categories to attract and retain real-money players.
Financial Health
HealthyHealthy · -15% CAGR over 2y
Location
A BET A TECHNOLOGY LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops software systems for betting operators, including retail EPoS bet management platforms, telebetting call‑centre software, online and mobile betting applications, and in‑shop display and…
Serves B2B customers in the gambling sector, including bookmakers, betting operators, retail betting businesses and telephone betting call centres in Great Britain.
Financial Health
StrongStrong · -3% CAGR over 3y
Location
Oz Racing Uk Ltd
Trajectory
3y · 2023–NowManages and distributes media, betting and data rights for horse racing events. Produces and broadcasts live race coverage and operates subscription channel Racing TV. Licenses official pre‑race and…
Sells to racecourses, betting operators, licensed betting offices, broadcasters, media companies and racing data users. Also serves horse racing fans through subscription viewing services, with an…
Financial Health
Insufficient historyInsufficient history
Location
SPORTRADAR UK LIMITED
Trajectory
2y · 2021–NowFinancial sub-scores
Computed from 2 filingsProvides sports data, statistics, and odds for betting operators, media companies, and sports organisations. Develops software platforms, APIs, live streaming, and analytics tools, and delivers…
Serves B2B customers including betting and gaming operators, media and technology companies, sports teams, leagues and federations, plus integrity and regulatory bodies in the sports sector.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 22% CAGR over 1y
Location
EVOLUTION GAMING LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops and supplies online casino gaming software for gambling operators, including live dealer table games, game shows and slots. Provides streaming studio systems, game development and platform…
Sells to licensed online casino and gambling operators seeking live casino, game show, slot and first-person game content, with some offerings for land-based casino venues.
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 1y
Location
SPLASH TECHNOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops a B2B platform providing free‑to‑play sports and casino games with real‑money jackpots for betting and iGaming operators. Offers integrated game hubs, APIs and analytics used for customer…
Serves B2B operators in sports betting and iGaming, including casino and sportsbook brands, platform providers, and CRM/loyalty teams focused on player acquisition and retention.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
WHITE SWAN DATA LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsDevelops quantitative models and software platforms for sports betting markets. Conducts statistical research to price risk across sports and uses data‑driven systems to support betting strategies…
Serves B2B clients in global betting and gambling markets, including sports-trading organisations and investors active in quantitative wagering markets.
Financial Health
StableStable · Hiring · 39% CAGR over 1y
Location
Bet Invest Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies sportsbook and esports technology for betting operators, including iframe sportsbook platforms, odds feed APIs, AI‑driven tournament products, fast sports content, and related…
Sells to B2B sports betting and gaming operators seeking sportsbook, odds feed, esports, fast sports and AI tournament solutions.
Financial Health
StrongStrong
Location
Brightstar Lottery
Provides technology, systems and services for lottery operators, including retail terminals and vending machines, digital lottery platforms, game design and development, instant ticket production,…
Serves government-regulated lottery operators and lottery organisations worldwide, including national and state lotteries, retail lottery channels and digital/iLottery teams.
Location
Allwyn Lottery Solutions
Develops and supplies software platforms and digital services for lottery operators, including iLottery systems, instant‑win and draw game delivery, customer engagement tools, analytics dashboards,…
Sells B2B to lottery operators and lottery organisations, including teams responsible for iLottery, retail channels, game portfolios, player engagement, analytics, and web/mobile customer experiences.
Location
Lacerta Sports Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides sportsbook pricing, risk management and customer analytics services for sports betting operators. Develops pricing algorithms, betting odds models and account analysis tools, and offers…
Serves B2B sportsbook and sports betting operators, including online betting brands seeking pricing, risk management, account analysis and customer analytics tailored to their bet flows, liabilities,…
Financial Health
DistressedDistressed · Hiring · 6% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sports betting data feeds and APIs for sportsbooks and betting platforms, including real-time odds, in‑play data, sports statistics, and historical betting datasets. Products support…
Sells B2B to global sports betting operators and sportsbooks, including developer, trading, risk and product teams that need real-time odds, sports data and historical betting data feeds.
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 4y
Location
IMG Arena
Provides sports data feeds, live streaming, and betting-related content for sportsbooks and betting operators. Manages sports media rights and distributes official data, audiovisual streams, and…
Serves B2B customers in sports, media and betting: betting and gaming operators, broadcasters and technology/media companies, sports teams, leagues and federations, plus regulators and integrity…
Location
Racecourse Media Group
Manages and distributes media, broadcast, betting, and data rights for horse racing events. Produces live race coverage and digital content, and licenses official pre‑race and race‑day data to…
Serves UK racecourses, betting operators, broadcasters, media companies, analysts and horse-racing fans, with international betting and broadcast partners across many territories.
Location
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How London iGaming companies work and how to sell to them
What they do
London iGaming firms usually earn revenue through operator margin or supplier contracts. Operators take a margin from customer stakes after winnings, bonuses and tax treatments, while suppliers sell the software, content, payments, identity, risk or managed-service layers that keep regulated products running. Pricing often blends setup work, monthly platform fees, minimum guarantees, revenue share and per-transaction charges, so commercial value depends on volumes as much as licence price. A content or platform deal may start as an integration project, then turn into an ongoing operating relationship with reporting, uptime, compliance and account-management obligations.
Who they sell to
Most operator revenue ultimately comes from retail players, but business-to-business commercial work is aimed at other gambling businesses, media and affiliate channels, payments firms and regulated-service providers. Buyers are usually product, trading, compliance, finance, payments and platform leaders, with legal and senior management involved where licensing exposure is material. Smaller supplier tools may be bought directly by a functional head; platform, game aggregation, risk or payments contracts tend to run through formal vendor review, security checks and sometimes RFP-style procurement. Sales cycles are typically measured in months because integration, responsible-gambling controls and commercial modelling all need approval.
What they buy
Most London iGaming firms tend to spend on systems that reduce operational friction or licensing risk: customer verification, anti-money laundering checks, fraud detection, payments routing, chargeback handling, safer-gambling monitoring and regulatory reporting. Product and trading teams also buy odds, content feeds, testing tools, game aggregation, CRM, marketing attribution, affiliate management, data warehousing and business intelligence. As they grow, the same firms need cloud hosting, monitoring, cyber security, incident response, customer-support outsourcing, specialist legal advice, accounting, tax, recruitment and contractor support. Sellers with sector fit usually map their offer to conversion, retention, margin protection, auditability or market-access work rather than generic software productivity.
Why and how to sell to them
London iGaming buyers tend to evaluate vendors when a licence application or variation is under way, a new market is being opened, a platform is being migrated, or compliance remediation has moved from legal advice into operational change. Revenue pressure can also create intent: rising acquisition costs, bonus abuse, payment failure, fraud losses and weak player retention all give budget holders a reason to revisit suppliers. Outbound works better when it shows knowledge of regulated workflows, integration burden and commercial risk. A useful first message usually names the specific operating problem, the buyer role affected and the governance outcome sought, rather than asking for a generic software meeting.
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.
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Frequently asked questions
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