Holborn & Bloomsbury is home to 64 of London's best tech companies, led by Fintech (16).

Cloud-native core banking software (Vault) used by large banks to replace legacy systems.

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

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

Local payment methods infrastructure for payment providers and merchants, covering 85+ markets.

Digital bank offering savings, mortgages and loans, with a focus on green home improvement lending.

Billing and quote-to-cash software that automates invoicing and revenue collection for B2B finance teams.

Cloud core banking platform that lets banks such as Westpac and Chase UK launch products faster.

Online lender giving small businesses in the UK and Germany fast, flexible working-capital loans.

Embedded revenue-based financing platform that lets marketplaces, PSPs and ecommerce platforms offer capital to their merchants.

Perenna is a UK bank offering long-term fixed-rate mortgages funded through covered bonds and savings deposits.

Tech-led statutory audit firm running audits on its own platform, live in Norway and launching in the UK.

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

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

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

Issuer processing platform that lets fintechs and banks launch and run debit, credit, prepaid and virtual card programmes globally.

Real-time account-to-account payment network and merchant accounts for businesses across the UK, EU and Australia.

Designs AI inference chips that run large models much faster and cheaper than today's GPUs.

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.

Open-source business intelligence tool built on dbt, with an AI analyst that answers data questions.

AI agents that turn sales calls and deal data into actions for revenue teams. Formerly Glyphic.

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

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

AI platform that automates legal work on residential and commercial real estate deals for law firms and property teams.

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

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

Platform that helps enterprises inventory, audit and monitor their AI systems for risk and regulatory compliance.

AI virtual agents that log into existing tools to automate manual operations work in insurance, financial services, healthcare and marketplaces.

Neurosymbolic AI that gives precise, explainable yes-or-no decisions for banks, insurers and accountants.

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

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

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

Trybe provides booking, scheduling, payments and membership software for hotels, spas and leisure venues.

B2B marketplace connecting diamond and gemstone suppliers with jewellery retailers worldwide.

Subscription digital library giving students and professionals access to over 1.5 million academic and professional ebooks.

Research, benchmarking and peer network platform for supply chain and operations leaders at large companies.

CybSafe is a human risk management platform that measures and changes employee security behaviours with nudges, phishing simulations and automated interventions.

Adaptive online exam preparation platform for 11+ entrance exams through to GCSE, used by families, tutors and schools.

Software for multinational companies to design, run and analyse employee benefits across 160+ countries.

Platform for corporate giving and nonprofit verification used by brands like Google, Atlassian and Canva. Formerly Percent.

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

Online platform offering live, interactive lessons from expert teachers for UK school students, with recordings, workbooks and homework.

Secret Escapes is a members only travel club selling discounted hand picked hotel stays and holidays.

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

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

Certifies carbon removal and other climate projects with AI-assisted verification and runs a public registry of credits.

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

Carbon management software that combines AI carbon accounting with in-house climate experts for footprints, product footprints and ESG reporting.

Builds and runs AI and HPC colocation data centres that capture waste heat and supply it to pools, district heating and other heat users.

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

Payments and banking rails for crypto firms, with FCA-authorised and EU-licensed entities.

AI agents that produce auditable due diligence reports on digital assets and private markets for institutions.

FCA-registered crypto derivatives data, volatility analytics, research and on-chain options pricing oracles for institutions.

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

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.

AI vision software that turns defence and security cameras into autonomous threat detectors, including drones.

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

Care management, rostering and finance software for UK homecare providers.

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

Clinician-founded AI assistant that listens to consultations and writes clinical notes, deployed across NHS trusts and GP surgeries.