IT Companies in London

GoodChoice IT Ltd

London

Expert IT support and cybersecurity for London & Surrey businesses. Managed IT, cloud, security, and strategic planning. Trusted since 2006.

GOODHABITZ UK

London

Goodlord

London

Don’t let admin hold you back. Let without limits with Goodlord. Everything letting agents, landlords, and tenants need to rent better, in one platform.

GOODSAM

London

GoodSAM provides real-time emergency response solutions, including geo-located alerting and dispatching, AI-powered triage, cardiac response coordination, live video triage, and emergency kit registry mapping. Its platform serves emergency, volunteering, and support services, as well as police, law enforcement, fire and rescue, and health care organisations across multiple global regions.

Gradient Labs

London

GRAHAM KIRTON

London

Graham Kirton Limited designs and delivers Oracle Enterprise Performance Management solutions for finance teams across various industries. The organisation provides connected planning, narrative reporting, account reconciliation, and financial consolidation and close applications, alongside integration software, to help businesses simplify finance processes, align budgets, automate balance sheet reconciliations, and manage financial close operations.

Granola

London

AI notepad software that automatically transcribes and enhances meeting notes across platforms without bots, with AI chat to extract insights and complete follow-up tasks.

GRAPH DIGITAL

London

Graph provides AI and growth consultancy services, including AI advisory, AI search visibility optimisation, go-to-market strategies, and production agent development. The organisation serves complex, technical B2B companies, particularly commercial, marketing, and digital leaders in sectors such as industrial manufacturing, polymers, energy, engineering, and technical software.

GRAVITY 9 SOLUTIONS

London

Gravity 9 Solutions Ltd helps enterprises automate processes with Agentic AI, build intelligent digital products, and modernize applications using AI. They serve clients across healthcare, public sector, hotels and casinos, and other industries seeking to improve productivity and accelerate innovation through AI-led automation and application modernization.

Great Expectations UK

London

Open-source data quality and validation framework enabling pipeline testing and documentation of data assets.

Green Mountain

London

Green Mountain operates colocation data centres powered by 100% renewable hydropower, with facilities in Norway at Stavanger, Rjukan, Enebakk, Hamar and Undheim, and data centres at LON-East in London and FRA-Mainz in Frankfurt. The company offers Tier III resilience, SLA-backed uptime and connectivity via multiple high-speed submarine fibre cables providing low-latency links to Europe and the USA. Norway's electricity pricing provides a favourable total cost compared with other European locations. Green Mountain recently signed a contract at LON-East with a major neocloud operator and acquired the freehold of its Romford site.

GreenPower Monitor

London

Clean energy asset management and monitoring software company with UK operations in the renewable energy sector.

GRG Professional Services

London

GRG Professional Services builds document automation, AI agents and bespoke software for accountancy, FinTech, insurance and public sector organisations, with more than 24 years of experience in document-heavy, regulated environments. The company has been a certified Tungsten and Kofax specialist since 2007, and its AI-driven document extraction and classification work is built on AWS using its own Caelum extraction engine. GRG's client list includes Unilever, Bidfood, Co-op and Atlas Copco. Its delivery process runs through discovery and process assessment, solution design and build, security and compliance alignment, and testing, training and handover, followed by ongoing support and optimisation for each client's document workflows.

Griffin

London

Banking-as-a-Service platform with a UK banking licence for fintechs to embed financial services.

Groundcover UK

London

eBPF-powered cloud-native APM platform making full-stack observability effortless without code changes.

Grove Information Systems

London

Growth Engineering

London

UK-based eLearning company providing learning management system, authoring tool and learning app.

GrowthBook

London

Open-source feature flag and A/B testing platform giving teams full control over experimentation without vendor lock-in.

growyze

London

Stock management app for food and drink stock control. With barcode scanning, product ordering and invoice reconciliation, for simple inventory management.

GULP DIGITAL

London

Gulp Digital provides websites and digital solutions in the cloud for public and private sector organisations. They deliver services such as data platforms, digital system replacements, SaaS product scaling, and user-centred design, working with clients including government bodies and housing organisations to meet service standards and improve digital engagement.

H&A IT SOLUTIONS

London

H&A IT Solutions provides IT consulting and services including digital delivery, cloud solutions, full stack engineering, mobile technology, managed IT services, data engineering, and research development and security. The organisation serves organisations seeking to leverage digital technology for transformation and competitive advantage through technical expertise and collaborative partnerships.

Hadean

London

Distributed cloud computing platform for scalable, spatial and immersive experiences across enterprise and defence.

Halo Labs

London

Semantic blockchain analytics company providing data intelligence on crypto assets for compliance and research.

Hapi Hotels

London

Hotel data integration platform connecting PMS, CRM and distribution systems for hospitality groups.