Tech companies in the City of London

Lending platform that gives small businesses fast loans, funded by institutional investors.

AI-powered data and analytics platform for debt and credit market professionals.

AI platform that screens customers and transactions for money laundering, sanctions and fraud risk.

Sells Alfa Systems, software that lenders use to run asset finance and leasing businesses.

Clearing bank giving fintechs and banks UK payments access, accounts and embedded banking.

Online trading and investing platform offering CFDs, spread betting, forex and share dealing to retail and institutional clients, plus white-label trading technology for partners.

Wealth management platform providing technology and administration infrastructure to banks, insurers and asset managers.

Online trading platform offering spread betting, CFDs, share dealing, options and crypto trading to retail and professional clients.

IntegraFin runs Transact, an investment platform for UK financial advisers and their clients, and sells software to advice firms including the Curo CRM.

LSEG provides financial market data and analytics, indices, risk intelligence and market infrastructure including exchanges and clearing.

UK digital bank with app-based current accounts, savings and business banking.

Spend management platform combining corporate cards, expenses, payables and accounting for finance teams.

Payments group offering merchant payment processing, digital wallets such as Skrill and Neteller, and online cash solutions such as paysafecard.

Identity verification, KYC, KYB, transaction monitoring and fraud prevention platform used by 4,000+ companies.

Card payments, business accounts and funding for small local businesses across Europe, formerly SaltPay.

Commission-free app for trading and investing in stocks, ETFs and ISAs.

Tech-led motor insurer for gig workers, fleets and everyday drivers, using telematics to price policies.

Wholesale bank offering accounts, payments, clearing and agency banking to banks and fintechs.

Unified payments infrastructure letting merchants connect, optimise and manage many payment providers from one platform.

No-code platform that lets insurers and MGAs build, configure and distribute insurance products.

Cloud-native transfer agency and investor servicing software for global asset and wealth managers.

Payments platform that lets small businesses and accountants collect, approve and pay invoices in one place.

Fully licensed UK bank offering API-first banking-as-a-service so fintechs can build financial products.

Low-latency API connecting banks and asset managers to fixed income and derivatives trading venues.

Planning software, model portfolios and investment platform for UK financial advisers.

Client onboarding and verification platform covering identity, AML checks, proof of funds and payments for regulated firms.

Fund accounting and operations software for private equity firms, fund administrators and family offices.

Platform that automates FX hedging and cash management for fund managers and corporates.

Cloud-based card issuer-processor that lets banks and fintechs launch physical and virtual cards.

Proxymity runs a digital network that connects issuers, intermediaries and investors for proxy voting and shareholder identification.

Global business payments platform with multi-currency accounts, FX and cross-border payouts for companies.

B2B cross-border payments and FX platform focused on emerging market currencies, especially Africa.

Lloyd's first fully digital, algorithm driven syndicate that lets brokers get instant specialty insurance quotes.

Licensed UK digital bank paying interest on current accounts, with savings, ISAs and loans.

Account-to-account payment infrastructure that lets banks, fintechs and payment companies offer Pay by Bank, variable recurring payments and payouts through one API.

Sharegain provides securities lending as a service so brokers, private banks and custodians can lend out clients' stocks, bonds and ETFs for income.

APEXX runs a payment orchestration platform that lets enterprise merchants route payments across providers through a single API.

Regulatory reporting software and consulting that helps banks and asset managers check, fix and manage transaction reporting.

Sprive is an app that helps homeowners pay off their mortgage faster through automatic overpayments, partly funded by cashback from everyday shopping.

AI platform that automates admin and compliance paperwork for financial advice firms.

Business accounts, cards, cashflow and treasury tools for fast-growing digital companies.

Specialty insurance platform for brokers and underwriters, covering algorithmic underwriting and delegated authority.

APIs linking small business accounting and banking data to banks and lenders for faster credit and advice.

Cloud data management platform that gives asset managers and banks a consolidated view of their investment data.

Cloud platform that runs account to account payment processing for Tier 1 banks and fintechs, including Nationwide.

Genesis Global provides a low-code application development platform for financial institutions.

Revolving credit lines of £50K to £1M for UK SMEs, paired with free cash runway forecasting tools.

FCA-regulated onboarding, ID and AML checks, and payments platform for estate agents, law firms and conveyancers.

Digital sandbox and vendor marketplace that lets banks and insurers test and validate new technology vendors quickly.

A marketplace and research service that helps investment firms find, evaluate and price alternative and market datasets.

A white-label platform banks use to onboard and serve small business merchant services customers.

Subscription and leasing platform for phones, laptops and consumer electronics, with brand partners like PlayStation, LG and Dyson.

Digital insurance broker selling business insurance to small firms and high-growth tech companies.

Treasury and payments platform for insurers that manages claim funds and pays claimants, vendors and reinsurers across the insurance value chain.

Platform that lets car makers launch and run their own branded motor insurance products.

Online food and grocery delivery marketplace connecting restaurants, shops and riders, now part of DoorDash.

Food delivery app focused on Asian restaurants and groceries, operating across ten countries including the UK, US, France and Australia.

NYSE-listed software engineering and IT services firm building digital products and platforms for enterprise clients.

GlobalData sells subscription data, analytics and AI tools that give companies intelligence on their industries and markets.

LTG provides digital learning and talent management software and services to large organisations through businesses including GP Strategies and Open LMS.

Mimecast sells email security and human risk management software to organisations.

Team Internet runs domain name management, online product comparison and search advertising services for brands, publishers and consumers.

Rail and coach ticketing app and website selling tickets across the UK and Europe.

Online booking marketplace and salon management software for hair and beauty businesses across Europe.

Trustpilot runs an online platform where consumers publish reviews of businesses and businesses manage and display them.

Property operations software for landlords and housing providers to manage repairs, contractors and compliance.

Duel is a software platform that lets consumer brands build, manage and pay communities of creators, ambassadors and customer advocates.

Zero Gravity is an online platform that gives students from low-opportunity backgrounds mentoring and AI tutoring to help them reach top universities and careers.

Expert network platform that connects investors and consultants with industry experts through calls, video Q&A and searchable AI transcripts.

AI-native platform for companies to design, manage and scale employee benefits globally.

Digital identity and age verification provider, known for its ID wallet and AI age estimation.

Builds and runs a dedicated full fibre network that sells high-speed internet connectivity to businesses in central London.

B2B wholesale marketplace for branded health and beauty products across Europe.

Real-time data and analytics platform tracking energy cargoes and freight flows for traders and shippers.

Open-source API gateway and API management platform used by enterprises to run and govern their APIs.

Platform where employees spend company learning budgets on courses and coaching from 100+ providers, with retraining-based outplacement for departing staff.

Element makes secure, self-hostable chat and collaboration apps built on the open Matrix protocol.

Immersive 3D design and collaboration tool that lets product teams sketch and review designs in VR and on desktop.

Identity infrastructure that lets publishers, advertisers and ad tech platforms recognise users for digital advertising.

Global fashion shopping platform that lets shoppers search and buy products from thousands of brands and retailers in one place.

Tech-led expert network and primary research platform connecting investors and consultants with industry experts.

Enterprise intranet and employee experience platform used by large companies for internal communications, knowledge and collaboration.

Restaurant operating system covering ordering, kitchen management and reporting for hospitality brands.

AI platform that helps patent attorneys draft, prosecute and litigate patents faster.

Enterprise platform that lets employees build and deploy custom AI applications using natural language instead of code.

AI assistant that sorts your inbox, drafts email replies and takes meeting notes.

AI agents that investigate code and cloud vulnerabilities and flag only the ones that matter.

AI platform that turns frontline video into safety and risk insights for infrastructure and utility fieldwork.

Task mining platform that records how enterprise staff work and maps processes for AI agents and automation.

GPU cloud provider behind Hyperstack, offering AI compute and sovereign AI infrastructure in Europe.

AI recruitment platform that combines candidate sourcing, multichannel outreach, call notes and CRM for recruiting agencies.

AI research platform that automates due diligence and background checks on people and companies for banks, law firms and corporates.

TurinTech builds Artemis, a multi-agent AI platform that optimises, validates and modernises code.

Uses AI to build custom operations software for utilities, logistics and field service companies.

Inference platform that lets enterprises run open-source AI models on their own infrastructure, cheaply.

General Reasoning is an AI research company training models for long-horizon reasoning and releasing tools such as OpenReward for agent training environments.

Simulates how audiences and stakeholders will react, so companies can test decisions before making them.

AI platform that helps pharma teams make commercial, portfolio and competitive intelligence decisions faster.

AI case intelligence platform for litigation lawyers, used by firms like Dentons, A&O Shearman and Duane Morris.

AI platform for B2B software companies that predicts customer churn and expansion and automates customer success workflows.

AI platform for scheduling, risk and project controls on large construction and infrastructure projects.

Data platform that ingests real-time engineering and test data for hardware teams, with AI agents that automate analysis, dashboards and workflows.

AI platform that turns retail data into daily priorities and actions for store and field leaders.

AI platform that helps companies find, qualify and bid for public sector contracts.

AI reinsurance intelligence platform helping brokers and cedents run client work and programme placement.

AI that detects health signals like fatigue, stress and depression from short voice samples.

Captures, archives and analyses financial firms' communications across mobile, chat, email, voice and video, using AI to flag misconduct.

Institutional crypto liquidity provider and OTC market maker, majority-owned by Japan's SBI Holdings.

FCA-regulated crypto index provider whose bitcoin reference rate prices major US spot bitcoin ETFs.

Algorithmic trading firm that provides liquidity across crypto markets and is expanding into traditional markets.

Regulated digital asset custodian offering custody, staking, tokenisation and collateral services to institutions.

Blockchain analytics used by exchanges, banks and governments for crypto compliance and risk screening.

Crypto and stablecoin payments app and card issuer, a principal member of Visa and Mastercard.

Privacy-first Ethereum layer 2 using zero-knowledge proofs, plus the Noir language for private smart contracts.

FCA-regulated UK trading venue for centrally cleared digital asset futures and options for institutional investors.

Builds clearing, payment and settlement infrastructure for institutional digital asset markets, regulated in the UK.

Researches and builds blockchain protocols and peer-to-peer platforms for decentralised financial markets.

Banking and payments API that gives crypto platforms regulated fiat accounts, virtual IBANs and payment rails.

Portfolio and risk management software for institutional crypto funds and trading firms.

London venture firm and accelerator investing in early-stage crypto and AI startups.

Builds FinP2P, an interoperability network letting banks trade and settle tokenised assets across blockchains and ledgers.

Bank-backed crypto custodian offering custody, staking, trading and settlement services to institutions.

Institutional digital asset brokerage for cross-border crypto and stablecoin trading with same-day settlement.

Global developer and operator of utility-scale solar, wind and battery storage projects, owned by bp.

Software platform that helps companies and investors measure, report and act on nature and biodiversity risks, including TNFD and CSRD disclosure.

Uses AI, wireless sensors and data to optimise concrete mixes and cut cement emissions in construction.

Arenko's Nimbus software controls and trades grid-scale battery storage assets in energy markets.

Makes cultivated chicken for pet food from cells, the first company to sell cultivated meat for pets.

Climate data platform for food and beverage firms, covering corporate and product carbon footprints and supplier decarbonisation.

Installs and runs on-street EV chargers for residents without driveways across UK councils.

Emissions and sustainability data for cloud and AI infrastructure, helping IT teams cut carbon and cost.

Kita is a Lloyd's coverholder that sells insurance against delivery, failure and political risk for carbon and natural capital projects.

Platform that builds digital twins of food supply chains to measure product-level carbon, cost and risk for retailers and suppliers.

Osprey builds and runs a UK network of public rapid and ultra-rapid EV charging hubs.

Provides a single API that streams connected vehicle and charger data from 30+ automakers to fleets and energy companies.

Builds combat-proven unmanned air, land and sea systems, including Magura sea drones, for allied militaries.

UK arm of Anduril, supplying autonomous systems and Lattice software to British defence customers.

Builds synthetic battlefields where autonomous defence systems and military AI are trained and tested.

Builds low-cost autonomous defence systems including targeting systems, surveillance towers, drones and software.

AI software that helps defence and security teams analyse large volumes of information and make faster decisions.

Practice management and electronic health record platform for private outpatient healthcare providers.

Biotech developing drugs that improve sleep architecture to treat Alzheimer's, Parkinson's and other neurological disorders.

Notified body that certifies software and AI medical devices for the EU and UK markets.

Builds Juno, an AI agent that takes on admin work in NHS hospitals to cut delays in patient care.

Entia makes Liberty, a home finger-prick blood analyser that returns results in minutes and shares them with the patient's healthcare professional.

Designs reversible-computing chips that recover and recycle most of the energy used in computation to cut power use for AI workloads.