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Crypto Exchange Companies in London: 49 Active Firms (2026)
Crypto exchange companies in London operate cryptoasset trading, brokerage and settlement services for customers under FCA oversight.
Buying centres split between retail brokerage funnels, professional trading desks, institutional execution, and back-office settlement or treasury workflows. Most London operators sell to businesses or mixed consumer and business audiences, with revenue tied to transaction fees, spreads, treasury activity and trading infrastructure. Engagement size tends to vary by customer type: self-serve retail accounts at the light end, negotiated trading and settlement arrangements for professional and institutional users at the heavier end. Compliance, onboarding and fiat-payment connectivity sit close to the buying decision, because a trading venue without bank relationships and customer-screening controls has little room to operate.
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London has 49 actively trading crypto exchange and trading companies in this list, a compact cohort with a clear regulated-financial-services bias. Reported employment totals 325 people, so the footprint is relatively lean even before allowing for outsourced compliance, custody, payment and development work. Revenue scale is uneven: 6 firms report turnover above £5M, while 9 were incorporated since 2022. That mix points to a market where a few operators have reached commercial scale, but many remain early-commercial entities whose market access depends on permissions, banking access and customer-acquisition costs.
FCA supervision is the main constraint on market entry. In-scope cryptoasset exchange providers and custodian wallet providers must register for anti-money-laundering and counter-terrorist-financing purposes before serving UK customers. The UK financial promotions regime also reaches consumer promotions aimed at UK users, including activity by overseas promoters. This creates an operating burden around registration, trading controls and how products are described, approved and distributed. Application outcomes point to a selective gateway, with withdrawn applications common, so authorisation strategy is part of the commercial model rather than a back-office exercise.
Commercial development appears likely to favour operators that can pair trading access with compliance, payments and institutional service depth. The cohort has an early-commercial tail, while scaled revenue cases are scarcer, so consolidation or quiet exits may be more plausible than a broad wave of new standalone venues. Retail demand tends to bring conduct risk and marketing scrutiny; institutional demand tends to reward execution quality, settlement reliability and balance-sheet discipline. London should keep attracting firms that need proximity to financial-services buyers, but regulatory selectivity may keep the active universe relatively narrow.
49
Active firms
2026
6
Revenue over £5M
reported revenue
9
Since 2022
incorporations
Key facts
About 12% of the trading cohort reports turnover above £5M (6 of 49 firms) — the rest sits below that revenue band.
18% of the cohort was incorporated since 2022 (9 firms), so a sizeable share is in its first few filing cycles.
Cryptoasset exchange providers and custodian wallet providers must register with the FCA under the Money Laundering, Terrorist Financing and Transfer of Funds Regulations 2017 before beginning in-scope UK business.
The UK financial promotions regime applies to cryptoasset promotions to UK consumers, regardless of where the promoting firm is based.
Since January 2020, the FCA had received 396 applications and registered 63 as at 1 May 2026, with many applications withdrawn.
FCA consumer research published in 2024 found that 93% of UK adults had heard of cryptoassets and 12% owned them, extrapolated to around 7 million adults.
Central, Northern and Western Europe accounted for 21.7% of global transaction volume between July 2023 and June 2024, with the UK ranked 12th in a global crypto adoption index.
Top London crypto exchange companies
Zodia Markets
Provides institutional cryptocurrency trading services, including digital asset brokerage and over-the-counter trading with voice and electronic settlement. Operates an exchange platform and…
Serves institutional financial clients and businesses seeking access to digital asset markets, including firms needing OTC trading, exchange access, custody-adjacent settlement support, and global…
Location
Provides institutional cryptocurrency trading and liquidity services, including OTC trading, market making, stablecoin swaps, and liquidity provision for banks, brokers, asset managers, exchanges,…
Serves institutional digital asset market participants globally, including asset managers, funds, banks, brokers, exchanges, digital asset treasuries, fintechs and crypto projects; does not serve…
Location
ACCX GROUP (UK) LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsOperates a regulated exchange for institutional trading of cryptocurrency derivatives. Provides digital asset derivative products, market indices, and trading infrastructure, with centrally cleared…
Serves professional and institutional market participants, not retail investors. Targets firms seeking compliant access to digital asset derivatives trading, including institutions allocating to…
Financial Health
StrongStrong · 60% CAGR over 1y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsOperates an online platform for buying, selling and trading cryptocurrencies and other digital assets. Provides crypto custody, staking and payment services, and enables clients to deposit and…
Serves retail crypto investors and active traders, plus institutional clients such as asset managers, corporations, ETP issuers, governments, hedge funds, market makers, protocols, VC firms and…
Financial Health
WeakWeak · 0% CAGR over 3y
Location
ZODIA MARKETS (UK) LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides institutional digital asset brokerage and trading services, including over‑the‑counter cryptocurrency execution and an exchange platform. Enables institutions and professional investors to…
Serves corporations, financial institutions and professional investors entering or active in digital asset markets, with an emphasis on institutional clients across global markets.
Financial Health
WeakWeak
Location
Matrixport Advisors Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides a digital asset financial services platform offering cryptocurrency trading, brokerage, lending and collateralised loans, custody, and investment products such as staking, structured…
Serves retail crypto users, high-net-worth individuals, and institutional clients seeking digital asset trading, investment, lending, custody, and wealth services, including listed companies and…
Financial Health
WeakWeak · 0% CAGR over 1y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsOperates a regulated trading venue for digital asset derivatives. Provides an institutional platform for trading cash‑settled Bitcoin index futures and options, with contracts centrally cleared…
Serves institutional financial market participants, including banks, asset managers, hedge funds, proprietary trading firms and brokers seeking regulated access to digital asset derivatives and…
Financial Health
StrongStrong · Hiring · 152% CAGR over 3y
Location
Sage Capital Global Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides infrastructure and brokerage services for digital asset markets. Offers algorithmic trading, liquidity access, lending, settlement and custody connectivity through a unified platform…
Serves institutional digital asset firms, including funds, brokers, trading firms and market professionals operating across fiat and crypto markets.
Financial Health
DistressedDistressed · -10% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides over-the-counter liquidity and trading services for digital asset markets, including derivatives and spot crypto. Offers market making, OTC trading, stablecoin swaps, and liquidity solutions…
Serves institutional digital-asset market participants globally, including asset managers, funds, banks, brokers, exchanges, fintechs, crypto projects and digital asset treasuries; does not serve…
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides a digital finance platform offering cryptocurrency wallets, exchange services, and payment cards. Enables users and businesses to buy, hold, transfer, and spend cryptocurrencies and fiat,…
Serves retail crypto users, high-net-worth individuals, businesses needing stablecoin banking and corporate cards, and developers building stablecoin payment/card products. Targets a mix of B2C, B2B…
Financial Health
StrongStrong · Hiring · 66% CAGR over 1y
Location
COINJAR UK LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsOperates an online cryptocurrency exchange and wallet platform enabling users to buy, sell, trade, send and store digital assets such as Bitcoin and Ethereum. Supports bank and card payments,…
Serves UK retail cryptocurrency investors and traders, with separate account options for business users needing access to digital assets and multi-currency crypto trading.
Financial Health
StrongStrong
Location
ONE UK TRADING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates an online cryptocurrency trading platform offering spot trading and perpetual futures with leverage, account management and exchange infrastructure, and provides white‑label and…
Targets UK self-declared investment professionals, active crypto traders and institutional clients, including firms seeking white-label exchange infrastructure.
Financial Health
StableStable · -11% CAGR over 4y
Location
G-20 STRATEGIES LTD
Trajectory
1y · 2024–NowProvides quantitative trading and liquidity provision across FX, commodities and digital asset markets, including market making and OTC execution in spot, futures and options. Also offers treasury…
Serves institutional clients, companies and foundations across finance, digital assets and other industries, including organisations needing market liquidity, treasury support and strategic advisory…
Financial Health
Insufficient historyInsufficient history
Location
Provides a cryptocurrency investment platform and mobile app enabling users to buy, sell, store and trade digital assets such as Bitcoin and Ethereum, with tools for portfolio management, staking…
Serves individual crypto investors, newcomers and experienced traders, plus professional traders and institutions of all sizes in 40+ countries seeking access to Bitcoin, Ethereum and other digital…
Location
BLOCKCHAIN DATA LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and operates cryptocurrency trading platforms and digital wallets enabling users to buy, sell, store, swap and stake cryptoassets. Provides DeFi wallet services, custody, liquidity, OTC…
Serves individual crypto investors, professional traders, institutional investors and public companies, including organisations managing crypto treasuries, OTC trading, liquidity, custody and staking.
Financial Health
StableStable · 0% CAGR over 4y
Location
Trajectory
1y · 2025–NowOperates a regulated marketplace for issuing, trading and lending alternative and digital assets. Provides services for issuers and investment managers including fund structuring, tokenised…
Serves institutional investors, investment managers and securities issuers seeking regulated market access to alternative assets, digital assets and tokenised securities in institutional capital…
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
2y · 2019–NowFinancial sub-scores
Computed from 2 filingsOperates an algorithmic trading firm in digital asset markets, providing OTC trading, spot and derivatives execution, and liquidity provision for cryptocurrencies and tokens. Offers API access, DeFi…
Serves institutional digital asset traders and counterparties, token issuers and protocols, DeFi projects and DAOs, and early-stage DeFi founders seeking venture backing.
Financial Health
StableStable · 0% CAGR over 1y
Location
NATIONAL VAULTING SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates an online trading platform enabling users to buy and sell cryptocurrencies, tokens, and physically vaulted precious metals. Provides account management, order‑book trading, custody of…
Targets retail investors, crypto traders and API/bot users seeking exposure to alternative assets, including cryptocurrencies and vaulted precious metals. Serves buyers and sellers managing their own…
Financial Health
WeakWeak · -24% CAGR over 4y
Location
Operates a cryptocurrency exchange and digital asset platform enabling users to buy, sell and trade cryptocurrencies, access derivatives such as perpetual contracts, stake assets, store funds in a…
Serves retail crypto investors and active traders in Europe, plus small and large institutions whose business requires cryptocurrency trading, staking, custody, and on-chain asset access.
Location
CRYPTO FACILITIES LTD
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsOperates a regulated multilateral trading facility for cryptocurrency derivatives, enabling institutional users to trade futures contracts on assets such as Bitcoin and Ethereum. Provides trading…
Serves institutional traders, financial firms and crypto market participants that qualify as MTF members and trade cryptocurrency derivatives via API or member portal.
Financial Health
StrongStrong · -86% CAGR over 2y
Location
Trajectory
1y · 2021–NowProvides business payment services including multi‑currency named accounts, global money transfers and foreign exchange through an online platform. Also offers cryptocurrency trading, payment…
Targets high-risk and digital-asset sectors globally, serving pioneering businesses, corporates, institutional clients and high-net-worth individuals underserved by traditional banks.
Financial Health
Insufficient historyInsufficient history
Location
Talos Trading Solutions Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides software for institutional trading of digital assets, offering tools for price discovery, order execution, portfolio construction, risk management, treasury and settlement, data integration,…
Sells B2B to institutional digital-asset market participants, including asset managers, ETF issuers, hedge and crypto funds, proprietary trading firms, banks, brokers, OTC desks, custodians, payment…
Financial Health
HealthyHealthy · Profitable
Location
ABEX CAPITAL LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops algorithmic trading software for digital assets, providing best‑execution services that route and execute orders across crypto trading venues. Uses machine learning, quantitative models and…
Serves institutional digital asset market participants, including hedge funds, asset managers, quant funds, OTC desks, brokers, custodians, exchanges, prime brokers, ECNs, and OMS/EMS platforms.
Financial Health
WeakWeak · 0% CAGR over 1y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates an online platform based on the XRP Ledger that enables users to store, send, receive, trade, and manage digital assets and cryptocurrencies, providing wallet services and exchange…
Serves individual users of digital assets, including cryptocurrency holders and traders using the XRP Ledger, with some functions specifically referenced for UK customers.
Financial Health
WeakWeak
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides a financial services platform for businesses including multi‑currency accounts, international payments, foreign exchange services, cryptocurrency trading, and crypto payment processing,…
Sells to businesses needing multi-currency accounts, global payments, FX and crypto payment capabilities, including internationally trading companies and firms that accept, trade or convert crypto,…
Financial Health
StrongStrong · Hiring · 52% CAGR over 3y
Location
Provides an API-based platform that enables banks, fintechs and trading platforms to launch and operate cryptocurrency services. Offers modules for digital asset custody, trading, fiat on/off ramps,…
Serves B2B financial services organisations—banks, neobanks, investment and trading platforms, consumer finance apps, fintechs, crypto exchanges and VASPs—seeking UK crypto market entry or continued…
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a mobile cryptocurrency wallet and digital finance platform enabling users to store, send and receive funds, make payments, and trade cryptocurrencies such as Bitcoin and Ethereum using…
Targets individual consumers globally who want access to digital currencies, stablecoin-backed money management, crypto trading, savings, payments and transfers with family and friends.
Financial Health
WeakWeak · Hiring · 11% CAGR over 4y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides digital asset infrastructure for banks, fintechs and trading platforms. Offers APIs and modules for cryptocurrency custody, trading, fiat on/off‑ramps, customer onboarding (KYC/KYB), AML…
Serves B2B financial services and crypto firms, including investment platforms, neobanks, retail banks, consumer finance apps, exchanges and VASPs seeking UK crypto market access.
Financial Health
StrongStrong
Location
BRONX LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates an online trading platform providing brokerage services for cryptocurrencies, stocks and ETFs (via contracts), commodities, indices and precious metals, enabling users to buy, sell and swap…
Serves retail investors and traders in Europe seeking access to crypto, stocks, ETFs, commodities, indices and precious metals through an online investing platform.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Iconomi Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates an online platform for cryptocurrency investing, enabling users to buy digital assets and copy managed crypto investment strategies. Provides portfolio management tools, automated…
Serves retail crypto investors, beginners, experienced traders and portfolio managers, alongside businesses, SME owners and financial advisors managing crypto exposure or client portfolios.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 2y
Location
Robinhood U.K.
Operates an online trading platform that enables users to buy and sell cryptocurrencies, trade crypto perpetual futures with leverage, and invest in tokenised derivatives linked to publicly traded…
Serves retail investors and crypto traders in the EU, including beginners investing small amounts and advanced traders eligible for higher-risk leveraged products.
Location
Busha Digital Limited
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides a mobile app and online platform for buying, selling and converting cryptocurrencies, managing digital asset wallets, and funding accounts. Offers recurring trades, interest‑earning crypto…
Serves individual consumers and business users seeking digital money and crypto asset access, including retail traders, savers, card spenders and organisations needing local funding or payouts.
Financial Health
StableStable · 0% CAGR over 4y
Location
FLOW TRADING LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electronic trading and market‑making services in global financial markets, specialising in exchange‑traded products and digital assets. Uses proprietary technology and risk management to…
Serves institutional financial market participants, including exchanges, trading platforms, brokers, asset managers and other counterparties across global ETP and digital asset markets.
Financial Health
WeakWeak · -10% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a cryptocurrency wallet and payment platform enabling users to buy, sell, store, and exchange cryptocurrencies including Bitcoin and Ethereum, convert stablecoins to euros, and spend funds…
Serves individual cryptocurrency holders and retail crypto users, including people paid in stablecoins, DeFi token users, and consumers whose banks restrict crypto transactions.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
Capital Markets Trading UK LLP
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides market‑making and proprietary trading across equities, derivatives and digital currencies. Partners with external trading groups and participates in capital markets ventures and investment…
Serves B2B financial-market counterparties and trading groups, including participants in equities, derivatives and digital currency markets, with an international reach.
Financial Health
DistressedDistressed · -13% CAGR over 4y
Location
ARKHAM INTELLIGENCE LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates a cryptocurrency trading platform offering spot trading, price tracking, market data and trading tools. Also develops blockchain intelligence and analytics software used to analyse digital…
Serves cryptocurrency traders and digital asset investors seeking exchange access, live market data, price tracking and trading tools.
Financial Health
WeakWeak · 100% CAGR over 1y
Location
VELOX TRADING LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsTrades cryptocurrencies and other digital assets using quantitative and algorithmic strategies. Develops software, data models and trading infrastructure for automated cryptoasset trading and…
Financial Health
StableStable · -58% CAGR over 5y
Location
GMEX INNOVATION LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops technology platforms and infrastructure for financial and capital markets, including multi‑asset exchange and trading systems, post‑trade processing, and blockchain-based solutions for…
Serves financial and capital market institutions, exchanges, post-trade providers, digital asset platforms, carbon market registries and participants across traditional, digital and hybrid asset…
Financial Health
DistressedDistressed · -7% CAGR over 3y
Location
Provides digital asset custody and trading infrastructure for institutional clients. Uses multi‑party computation (MPC) technology to secure and manage cryptocurrency wallets, enable asset transfers,…
Serves institutional clients in digital assets, including financial institutions, crypto trading firms, funds and token issuers requiring custody and trading infrastructure.
Location
VX CAPITAL LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsOperates an online brokerage platform offering trading in foreign exchange, cryptocurrencies, precious metals and stocks. Provides trading accounts, leverage and execution tools, as well as financial…
Targets retail and professional traders and investors in Europe, the Middle East and Africa, plus introducing-broker partners referring forex and CFD trading clients.
Financial Health
WeakWeak
Location
Rex Trade Associates Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates an online investment platform offering trading and investment in cryptocurrencies, forex, stocks, bonds, ETFs, and real estate projects. Also develops SaaS software for monitoring and…
Serves retail investors and crypto traders globally, including individuals seeking account-based investment plans across digital assets, forex, stocks, bonds, ETFs and real estate.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
MFT Capital
Trajectory
3y · 2018–NowOperates an online investment platform offering automated trading and managed investment plans across cryptocurrencies, forex, commodities, stocks, ETFs and other assets. Provides algorithmic trading…
Targets individual investors seeking automated trading and portfolio investment options across digital assets, forex, commodities, indices, stocks, ETFs and pre-IPOs.
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides online brokerage services for trading financial derivatives including forex, indices, commodities and cryptocurrencies via CFD accounts. Offers MetaTrader 4 trading platforms, API…
Serves self-directed retail and experienced traders, plus B2B partners including introducing brokers, account managers and firms seeking white-label brokerage infrastructure for forex, CFD,…
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 1y
Location
Eightcap
Provides online brokerage services for trading contracts for difference (CFDs) across forex, commodities, indices, shares and cryptocurrencies. Offers trading through platforms such as MetaTrader 5…
Sells to retail investors and self-directed traders seeking to trade forex, crypto, shares, indices and commodities via CFDs. Targets individual traders using platforms such as TradingView and MT5,…
Financial Health
Insufficient historyInsufficient history
Location
EXTENDED LIMITED
Trajectory
1y · 2024–NowDevelops trading and blockchain infrastructure for financial platforms, including high‑performance matching engines, liquidation frameworks and parallelised settlement systems. Also builds custom…
Serves B2B clients building digital-asset trading platforms, including crypto exchanges, DeFi/DEX projects, fintechs and financial institutions needing trading and blockchain infrastructure expertise.
Financial Health
Insufficient historyInsufficient history
Location
Provides software engineering and consulting for capital markets, developing custom electronic trading systems, exchange and matching engine technology, low‑latency messaging infrastructure, and…
Serves financial institutions in capital markets, including banks, exchanges, electronic trading venues and trading teams needing bespoke trading technology and infrastructure.
Financial Health
Insufficient historyInsufficient history
Location
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How London crypto exchange companies work and how to sell to them
What they do
London crypto exchange and trading firms usually earn through a mix of execution fees, bid-offer spreads, brokerage mark-ups, custody or settlement charges, and ancillary treasury activity. The core product is a software-led trading and account platform rather than advice: order routing, wallets or custody workflows, fiat payment rails, reconciliation and reporting wrapped around customer onboarding controls. Retail-facing revenue is usually self-serve and usage-based, with small ticket values aggregated across many accounts. Professional and institutional activity is more negotiated, often priced by volume tier, minimum fee, spread share or bespoke settlement arrangement. Services revenue can appear where operators provide white-labelled trading access or operational support to other financial firms.
Who they sell to
Most buyers split into two camps: individual users acquired through digital onboarding, and finance-sector customers that need execution, liquidity, settlement or treasury access. On the business side, typical stakeholders include founders, CFOs, compliance officers, heads of operations, CTOs, trading leads and procurement teams where the customer is an institution. Smaller accounts may convert through self-serve registration and standard terms. Larger relationships tend to involve direct sales, due-diligence packs, information-security review, legal negotiation and checks on how client assets, promotions and complaints are handled. Sales cycles can stretch where the customer’s own regulator, bank or payments provider needs comfort before activity starts.
What they buy
Crypto exchange operators tend to spend on control layers before discretionary growth tools. Common categories include identity verification, KYB checks, transaction monitoring, sanctions screening, fraud detection, wallet-risk scoring, case management, audit evidence, regulatory reporting and complaint handling. Technical teams also buy cloud hosting, observability, incident response, key management, ledger reconciliation, API management, payment connectivity and finance systems that can cope with high transaction volumes. Go-to-market spend is usually more constrained for UK consumer-facing activity because promotions must be approved and described carefully. Recruitment, legal advice, accountancy, tax support and outsourced compliance are also common needs, especially where the operating team is lean.
Why and how to sell to them
Buying intent often appears around regulatory review, banking or payment-partner change, new jurisdictional reach, a move from retail brokerage into institutional execution, or a rise in manual compliance workload. Operators with lean teams tend to value tools that shorten onboarding queues, reduce false positives, evidence control decisions and reconcile trading, wallet and fiat movements without extra headcount. Outbound works better when it speaks to operational constraints rather than crypto enthusiasm. Useful angles include lower compliance handling cost, clearer audit trails, faster partner due diligence, fewer failed payments, better incident readiness and support for financial-promotions governance. Claims need proof, because this sector is used to vendor scrutiny.
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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