Directory

Darktrace

CorporateCybersecurityAIBritish

Darktrace is a British AI-powered cybersecurity company that uses self-learning artificial intelligence to detect and respond to cyber threats across cloud, email, OT, and network environments. Founded in 2013 by mathematicians and intelligence experts from the University of Cambridge, the company was taken private in October 2024 following a $5.3 billion acquisition by US private equity firm Thoma Bravo. It remains headquartered in Cambridge, UK.

Dash0

ScaleupSaaSAIForeign

Dash0 is modern OpenTelemetry Native Observability, built on CNCF Open Standards such as PromQL, Perses and OTLP with full cost control

Dassault Systèmes

CorporateDeep TechSaaSForeign

Through virtual twin technologies, Dassault Systèmes’ collaborative platform empowers business and people to create sustainable innovations.

DataKind UK

Ecosystem Bodies, Catapults & InstitutionsAICommunityBritish

DataKind UK is an independently run charity that helps third-sector organisations achieve their missions by boosting their use of data science and analysis, all provided free of charge. It was the first international chapter of DataKind, launched in April 2013, and works by matching skilled volunteer data professionals with charities, social enterprises and community interest companies across the UK.

Databricks

CorporateAISaaSForeign

Databricks is an American data and AI company founded in 2013 by the creators of Apache Spark, offering a unified Data Intelligence Platform built on an open lakehouse architecture for data engineering, analytics, machine learning, and AI. The platform serves over 10,000 customers globally and the company employs over 14,000 people worldwide. Databricks has a significant European headquarters in London and has committed to investing $850 million in the UK.

Databricks Ventures

CorporateAIForeign

The strategic investment arm of Databricks, established in December 2021 to back early- and growth-stage companies advancing data, analytics and AI.

Datadog

CorporateSaaSAIForeign

Datadog is an American observability and security platform for cloud applications, founded in 2010 in New York City. The company provides infrastructure monitoring, application performance management, log management, real user monitoring, and security tools used by organisations across a broad range of industries. It is publicly listed on NASDAQ and employs over 8,000 people globally.

Dataiku

ScaleupAISaaSForeign

Dataiku is the Platform for AI Success that unites people, orchestration, and governance to turn AI investments into measurable business outcomes.

Dawn Capital

VCSaaSAIBritish

Dawn Capital is a London-based venture capital firm and one of Europe's largest specialist B2B software investors, with over $2 billion in total commitments since its founding in 2007. The firm partners with early-stage founders across Europe building global software companies, with portfolio companies including Mimecast, Dataiku, and Blackwall. Its investment focus spans fintech, cybersecurity, enterprise AI, and B2B SaaS.

Daye

ScaleupBiotech & Life SciencesConsumerBritish

Gynaecological health company making diagnostic tampons for at-home vaginal microbiome screening, alongside CBD pain-relief and drug-delivery products.

Decagon

ScaleupAISaaSForeign

Build, optimize, and scale AI agents that treat every customer like the only one.

Deep Planet

StartupClimateAIBritish

University of Oxford spin-out using satellite imagery and machine learning for viticulture yield and quality prediction, irrigation management, and soil-carbon modelling via its VineSignal platform.

Deep Science Ventures

Incubator / AcceleratorOtherAIBritish

Deep Science Ventures is a London-based venture creator founded in 2016 that combines available scientific knowledge with founder-type scientists to build high-impact companies from scratch. Using a proprietary solution-pull methodology, it operates across five focus areas — agriculture, climate, computation, pharmaceuticals, and education — and has launched 58 companies with a combined portfolio valuation of approximately £700 million. The organisation works with industry partners and academic institutions to de-risk ventures and attract world-class investors.

Deep Tech London

CommunityDeep TechClimateForeign

London's Deep Tech Festival — 5-11 October 2026

Deep Tech Week

CommunityDeep TechClimateEcosystem Bodies, Catapults & InstitutionsForeign

Deep Tech Week is a decentralized global conference series for the physical technologies building the science-fiction future.

DeepL

ScaleupAIForeign

Explore our AI suite and get more done: Translate speech, text, and media, or integrate the DeepL API.

Deepbridge Capital

VCAISaaSBritish

Deepbridge Capital LLP is a growth capital and tax-efficient investment specialist founded in 2010 and based in Chester, UK. The firm focuses on venture capital for innovative companies in the technology, life sciences, and renewable energy sectors, primarily through Enterprise Investment Scheme (EIS) and Seed EIS structures. Deepbridge works closely with financial advisers and investors to deploy capital into early-stage and growth-stage UK businesses.

Delib

ScaleupSaaSBritish

Digital democracy and citizen-engagement SaaS company providing software (Citizen Space, Dialogue, Simulator) for government consultation and public participation, used by over 600 government bodies worldwide.

Deliverect

ScaleupFoodtechSaaSForeign

Seamless digital ordering for every channel: dine-in, carry-out, drive-through, delivery, and catering. First-party solutions that maximise profits and control

Dell Technologies

CorporateDeep TechSaaSForeign

Dell Technologies is a multinational technology corporation headquartered in Round Rock, Texas, founded in 1984 by Michael Dell. The company designs, develops, and sells a broad range of personal computers, servers, storage, networking, software, and cloud-based services to consumers and enterprises worldwide. With approximately 108,000 employees globally, Dell Technologies is one of the largest technology companies in the world and is publicly listed on NYSE.

Deloitte

Professional ServicesOtherBritish

Deloitte is one of the world's largest professional services networks, providing audit, tax, consulting, financial advisory, and risk advisory services. Founded in London in 1845, the firm operates in over 150 countries with its UK member firm headquartered at New Street Square, London.

Demandbase

ScaleupSaaSAIForeign

Elevate your B2B go-to-market strategy with Demandbase's ABM platform, delivering smarter insights, agent-led automation, and AI-powered pipeline.

Dentons

Professional ServicesLegalForeign

Dentons is the world's largest global law firm by headcount, formed in March 2013 through the merger of SNR Denton, Salans, and Fraser Milner Casgrain. Operating as a Swiss Verein, it comprises over 8,000 lawyers across more than 160 offices in over 80 countries, providing comprehensive legal services across corporate, litigation, and advisory practices. The London office is the firm's largest by lawyer count.