South East

IT Companies in London

Compare IT and cloud providers working in London. What the market looks like, how to narrow a very long shortlist, and when being local actually matters.

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IT Providers in London

Showing 1897–1920 of 2141 providers in our directory

OneWeb

London

Low-Earth orbit satellite broadband constellation operator delivering global connectivity.

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Onfido, now part of Entrust Identity Verification Solutions, provides AI-powered biometrics and document intelligence to verify customer identities during onboarding and throughout the customer lifecycle. It serves organisations in financial services, healthcare, government, telecom, education and enterprise sectors seeking to prevent fraud, meet KYC and AML compliance requirements and secure high-risk transactions.

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Open Climate Fix

London

Non-profit tech company using ML to forecast solar power generation for grid operators.

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Open Medical

London

Cloud-based software for clinical workflow management and patient pathway optimisation across specialties.

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OpenAI

London

OpenAI develops and deploys artificial intelligence research and products. ChatGPT provides conversational AI for consumers and business users, with applications spanning customer operations, marketing and financial analysis. The API Platform gives developers programmatic access to OpenAI's models. OpenAI publishes research in mathematics, theoretical computer science and AI safety. Enterprise customers including Virgin Atlantic and Zapier use the platform to automate workflows and improve business efficiency.

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Opensee

London

Real-time analytics platform for capital markets firms handling large-scale trading and risk data.

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OpsLevel UK

London

Developer portal and service catalogue platform helping engineering teams manage software ownership.

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Opsyte

London

Hospitality management platform offering restaurant and bar analytics, rota management, HR and finance reporting.

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Options Direct

London

Options Direct provides configuration, building and shipping of servers, storage and networking equipment worldwide, with specialist knowledge in low-latency HFT systems for capital markets. They offer end-to-end global IT logistics, integrated solutions with Tier 1 vendors, GPU-based systems for AI and ML, software-defined storage partnerships, and third-party support for remote hands and spares across client estates.

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Optmyzr

London

PPC management and automation platform with AI tools for optimising Google Ads and paid search campaigns.

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Orbital Witness

London

Orbital provides an AI platform for commercial real estate legal work, supporting law firms, real estate businesses, and occupiers. It helps legal and property teams understand assets, visualise property data, draft and negotiate documents, and coordinate deal parties to accelerate transactions and manage risk.

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ORCA Computing

London

ORCA Computing develops full-stack photonic quantum computers to address use-cases such as generative machine learning and optimisation

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Ordo

London

Open banking payment and request-to-pay platform for businesses and financial institutions.

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Ortec UK

London

Advanced planning and optimisation software for workforce scheduling, route planning and supply chain.

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Outverse

London

Outverse gives teams a governed layer to deploy AI across complex service workflows. Connect your systems, orchestrate end-to-end workflows across multiple channels, and improve with control over time.

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Overleaf

London

Collaborative online LaTeX editor used by over 15 million researchers and academics worldwide.

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Pactum AI, Inc.

London

Pactum AI agents help companies unlock hidden value. Our AI Agents negotiates non-strategic supplier contracts at scale. Learn more today.

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Pair

London

Pair is a SaaS hiring platform that assesses software engineering candidates through timed, real-world coding competitions rather than traditional CV-based or LeetCode-style interviews.

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