AI & Machine Learning

Harmonic Security

Zero-touch data protection platform using AI to prevent sensitive data exposure in GenAI tools and SaaS applications.

Harri

Frontline workforce management platform combining ATS, scheduling, and HR tools for hospitality and retail employers.

Hashbyt

Is your SaaS product held back by slow releases & a clunky UI? Hashbyt is your AI-First Frontend & UI/UX SaaS partner. We build intuitive interfaces to boost user adoption, lower costs, and secure investor confidence.

Hasura

Instant GraphQL API platform over Postgres, MySQL, and other data sources with real-time subscriptions.

Hatica

Engineering insights platform measuring developer wellbeing, productivity, and DORA metrics from Git and PM tools.

Hawk-Eye

Hawk-Eye is a global leader in the live sports arena, pioneering change across Broadcast Production, Officiating and Performance through cutting-edge technology.

Hazy

Enterprise synthetic data platform generating privacy-safe, production-representative data for AI and analytics.

Headstart IT

Headstart IT Solutions is a London-based managed service provider offering IT support, server and network management, cloud services and cybersecurity to businesses, schools and charities.

Healthtech-1

Healthtech-1 develops Bookable, a suite of software products for NHS GP practices. Bookable Search helps practices be found by new patients online, supporting patient list growth in line with clinical capacity. Bookable Navigator handles appointment requests from existing patients via form, text or phone call, using doctor-developed AI to route each patient to the appropriate care pathway, replacing manual triage and reducing the demand pressure of the 8am appointment rush. Both products are designed to ensure patients reach the right care at the first point of contact.

Heap

Autocapture product analytics platform providing complete behavioural data without requiring manual event tracking.

Heart Internet

Heka

Employee benefits platform offering a monthly budget employees spend on health, wellbeing, learning, fertility, and nutrition.

Helpdesk Heroes

HelpDesk Heroes is a London-based IT services company providing managed IT support, cybersecurity and cloud solutions to businesses.

Helsing

Helsing develops AI-enabled precision and autonomous systems across all military domains for democratic governments and defence industry partners. The company designs and builds autonomous systems and works with governments and defence partners to connect existing hardware into AI-enabled networks. Helsing recruits teams with combined backgrounds in software engineering, defence, intelligence and artificial intelligence, and states a commitment to deploying these technologies to the highest ethical standards in support of democratic societies.

Hepapi

Hepapi delivers DevOps, software QA, application modernisation and enterprise AI services, and has operated since 2018. The company is an AWS Advanced Tier Services Partner, providing cloud solutions that it states achieve up to 70 percent faster software deployment through automated CI/CD pipelines and a 99.9 percent defect detection rate through its testing approach. Hepapi also reports a 40 percent reduction in cloud costs through AWS optimisation, an 85 percent improvement in application reliability through Kubernetes solutions, and a 95 percent reduction in security risk through DevSecOps practices. Its clients include Figopara and Digiturk.

Hertzian

Hertzian is a Truro-based AI company founded in 2015 that structures unstructured customer and player feedback. CustomerXP automates sentiment tracking and categorisation of customer feedback for enterprise CX teams, while PlayerXP aggregates player voices from Discord, Reddit and reviews to detect live-ops issues for game studios. Through Smart Start AI it offers strategic AI consultancy, custom machine learning models and full-stack implementation.

Hex

Collaborative data workspace combining SQL, Python, and no-code for analytics and data science workflows.

Hidden Brains InfoTech

Hidden Brains UK is a leading web and mobile app development company, providing comprehensive services, UI/UX, consulting, development & maintenance.

HighQ

Legal operations and collaboration platform (part of Thomson Reuters) for law firms and legal departments to manage matters and client portals.

Hireful

Applicant tracking system and recruitment software for UK SMEs and mid-market businesses.

Hive Learning

AI-powered skills academy platform reshaping corporate learning and talent development for enterprises.

Holistic AI

Holistic AI provides an enterprise AI governance platform covering discovery, risk management, testing and compliance enforcement for organisations deploying AI at scale. The platform identifies shadow AI across enterprise ecosystems, tests models and agents for bias and risk across 40 or more risk dimensions, and automates compliance workflows for regulations including the EU AI Act, where non-compliance carries a maximum fine of €35 million under Article 99. Features include AI red teaming, LLM testing, bias auditing, policy enforcement and reporting. Holistic AI was named a Challenger in the 2026 Gartner Magic Quadrant for AI Governance Platforms.

HomeMaster

Aareon provides a property management system that integrates AI to support housing providers and real estate professionals across Europe. It serves residential clients including affordable and social housing owners, housing managers, and commercial clients such as property owners, investors, managers, developers, brokers, agents, corporate occupiers, and facilities managers.

Homeflow

Property website and digital marketing platform for UK estate agents improving search, lead capture, and property portal integration.