More standout tech companies in London

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

HR platform called Bob that helps mid-size and multinational companies manage people, payroll and performance.

Apprenticeship and upskilling programmes that train employees in tech, data and AI skills.

Consumer electronics maker of smartphones, earbuds and headphones, founded by Carl Pei.

Booking marketplace and business software for salons, spas and wellness businesses.

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

Online marketplace where private sellers list cars and verified dealers bid to buy them.

ASOS is an online fashion retailer selling its own brands and hundreds of partner brands to customers in more than 150 markets.

Canonical publishes the Ubuntu Linux operating system and sells enterprise support and services around it.

Online car marketplace where dealers compete with offers to buy or sell your car.

Civica builds software for public sector bodies such as councils, healthcare, education and housing providers.

Claranet provides managed network, hosting, cloud, application and cyber security services to businesses in Europe and Brazil.

Colt runs a global fibre network and sells connectivity, voice and data centre services to businesses and carriers.

Builds and runs a full-fibre broadband network selling home and business internet across London.

DAZN is a sports streaming platform available in more than 200 countries and territories.

Peer-to-peer fashion resale app where people buy and sell secondhand clothing, now owned by eBay.

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

Farfetch runs an online luxury fashion marketplace selling products from over 1,400 brands, boutiques and department stores.

Supplies official sports data, betting technology and data-driven advertising to sports leagues, sportsbooks and media companies.

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

Recipe box company delivering ingredients and recipes for home cooking.

Hyperoptic builds and runs its own full-fibre network and sells broadband to homes and businesses in the UK.

ITRS sells real-time IT monitoring and observability software, mainly to financial services firms.

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

Online travel agency selling package holidays to UK customers.

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

Online platform for personalised greeting cards and gifts, operating the Moonpig and Greetz brands.

MUBI is a curated film streaming service that also produces and distributes films.

Advertising platform that targets and measures campaigns using anonymised audience personas instead of tracking individual users.

RVU runs consumer comparison and switching brands including Uswitch, Confused.com, Tempcover, Money.co.uk and Mojo Mortgages on a shared data platform.

Developer security platform that finds and fixes vulnerabilities in code, open-source dependencies and cloud infrastructure.

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.

Mobile games company running 12 studios, including Wordscapes maker PeopleFun, after buying AppLovin's games portfolio.

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

YouGov is an internet based market research and data analytics group that runs online panels with about 29 million members.

UK property portal for buying, selling and renting homes, with home valuation tracking for owners and lead tools for estate agents.

Commerce operating system for brands covering cross-border shipping, returns, tax, checkout and inventory.

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

Platform that lets managed service providers manage, secure and monitor Microsoft 365 across many client tenants.

AI procurement platform that helps finance teams buy and negotiate software and other spend, and has acquired Vendr.

Incident management, on-call and status page platform with AI agents that help teams resolve outages.

Tilt is a live-shopping marketplace app where sellers run livestream and video auctions for buyers.

Runs a hyperlocal last-mile parcel delivery network for e-commerce retailers such as ASOS and Vinted.

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

Subscription platform where creators, including AI creators, sell content and monetise fans.

Network and compliance platform connecting estate agents, conveyancers and lenders to speed up UK property transactions.

ThreatAware connects to an organisation's security tools to find every device and check that security controls are working.

Deploys and manages security canaries, decoy resources that detect attackers inside cloud and enterprise infrastructure.

Platform that turns food brands into national franchises through a network of 400+ delivery kitchens and high street restaurants, providing the systems, support and distribution to scale them.

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.

UK mobile network selling SIM plans and a backup eSIM that connects to EE, O2, Three and Vodafone, with free roaming in 180+ countries.

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.

Runs college campus stores in the US and delivers digital course materials to students through its own platform.

Surprise-trip platform that matches travellers to a booked itinerary of flights, stays and activities, revealing the destination at the airport.

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.

Publishes indie video games, including Balatro and Abiotic Factor, across PC, console and mobile.

Software for estate and letting agencies, covering sales CRM, lettings, property management, client accounts and consumer engagement tools.

Network where suppliers share one live security assessment with all their customers to manage supply chain cyber risk.

Premium ticketing, hospitality and travel platform for sport, music and culture events across the UK and Europe.

Acquires and operates B2B software tools for ecommerce merchants, adding AI features across its portfolio.

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

Screen-free audio player for children that plays stories, songs and educational content from physical cards.

Zeelo runs software and a network of contracted coaches and buses to provide shared commuter and school transport for employers and schools.

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

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

B2B sales intelligence platform that gives sales and marketing teams compliant contact and company data for prospecting and CRM enrichment.

Privacy-first audience data platform that lets publishers and advertisers target ads without third-party cookies.

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

Attest is a consumer research platform that lets brands run surveys and AI-moderated interviews with real consumers.

Realtime pub/sub messaging platform that lets developers add live features to apps, used by HubSpot and Webflow.

Customer data and marketing platform for retail brands that personalises messages across email, SMS, ads and other channels.

Cybersecurity platform for email authentication (DMARC, BIMI), brand impersonation and certificate protection.

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

Online marketplace that matches schools in the UK and US with supply teachers and support staff.

APIs that let businesses search, book and manage flights and hotel stays inside their own products.

Behavioural data platform that collects and streams customer event data for analytics and AI agents.

Digital freight forwarder and supply chain platform that books, tracks and manages international shipments for brands.

Plum Guide is an online booking platform for holiday rental homes that it vets and curates before listing.

Scans building interiors with LiDAR and AI to produce verified floor plans, measured surveys and digital twins for real estate (formerly Pupil).

App for booking chauffeur-driven car journeys in London, Paris, New York and Dubai, with personal and business accounts.

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

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

Harbr provides a platform that lets organisations run governed data marketplaces, data exchanges and data distribution deployed in their own cloud.

Referral and customer advocacy platform that lets brands run refer-a-friend programmes and track the customers they bring in.

Booking and commerce platform for businesses that sell travel, events and experiences.

Blink is a mobile app for frontline workers that combines company news, chat, forms, shift tools and an intranet in one place.

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

Ofsted-registered childminder agency and platform that trains and supports home-based childminders and lets parents find and book them.

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

Company behind the Pydantic Python validation library, the Pydantic AI agent framework and Logfire observability.

Self-checkout kiosks, mobile POS and scan-and-go apps that let shoppers pay without queuing in physical stores.

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

Carv makes clip-on ski boot sensors and an app that give skiers real-time audio coaching on their technique.

CybaVerse sells CybaOps, a SaaS platform for SMEs and managed service providers that combines threat detection, compliance, security testing and security operations.

Seatfrog is an app for buying train tickets, bidding on first class upgrades and changing train times with partner rail operators.

Online marketplace that matches people with local service professionals across more than 1,500 categories.

Bloom & Wild sells flowers, plants and gifts online for delivery, including letterbox flowers.

Online learning platform for English, maths and science that uses AI to personalise lessons and automate marking for schools and colleges.

Marketplace that matches startups with fractional executives, advisors and non-executive directors.

CULT MIA is an online marketplace selling clothing and accessories from vetted independent fashion designers.

CyberSmart gives small businesses cybersecurity tools, staff training, Cyber Essentials certification and cyber insurance in one platform.

Diginius Insight is a software platform that pulls together digital advertising, SEO, lead and reporting data for brands and marketing agencies.

Customer engagement platform that lets brands run email, SMS and personalised marketing campaigns from their customer data.

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

givestar is a fundraising platform that charities use for digital, event and contactless donations and supporter engagement.

Lettings software that lets estate agents, landlords and tenants handle referencing, contracts, payments and insurance online.

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.

Hiring marketplace that matches companies with vetted software engineers and other tech professionals.

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

Cloud vulnerability management platform that continuously scans internet-facing systems and prioritises the security weaknesses teams should fix first.

iProov provides face biometric verification that checks a person is real and present when they log in or onboard online.

Kitt provides managed offices in London, handling the space, fit-out, maintenance and facilities under one contract and monthly invoice.

LandInsight software that pulls together land registry, planning and other property data so developers can find and assess development sites.

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

Dating and marriage app for Muslims, connecting single Muslims worldwide.

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

Developer platform that deploys apps, databases and AI sandboxes on Kubernetes in any cloud.

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

Compensation benchmarking and pay management platform using real-time salary data shared by European tech companies.

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

Developer security platform offering hands-on secure coding training and threat modelling for enterprise engineering teams.

Security platform that links alerts across a customer's existing tools into cases, with AI triage and a managed 24/7 SOC under human oversight.

Develops and operates vertiports and heliports for electric air taxis and drones across 10 countries.

Ticketing, marketing, fundraising and CRM software for theatres, venues and other arts organisations.

Online marketplace for booking short-term luggage storage in shops, hotels and smart lockers.

Infinite canvas SDK for React that lets developers build whiteboards, diagramming and canvas apps with multiplayer sync built in.

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

Pre-employment screening platform running background checks, references and right-to-work checks in 150+ countries.

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

what3words divides the world into 3m squares and gives each a unique three-word address, used in its app and API.

Whering is a digital wardrobe app where people catalogue their clothes, plan outfits and packing, and share styling ideas.

Platform that handles payments, logistics, compliance and storefronts for consumer brands selling into China.

Mobile platform for store teams that combines task management, communications, training and AI copilots for retail operations.