IT Companies in London

STARLIGHT DIGITAL SERVICES

London

Starlight Digital Services Ltd provides digital transformation, research and innovation, cost reduction, and board development services. The firm assists public and private sector organisations, including the National Health Service, pharmaceutical firms, fast-moving consumer goods companies, defence, justice, retail, and energy organisations, as well as scale-up businesses, boards, and aspiring board members.

Station10

London

Station10 is a UK-based data consultancy that helps organisations use data to achieve strategic objectives and drive commercial value. Its services include analytics engineering, data strategy and planning, data governance, deep dive data and data science, customer activation and optimisation, Adobe services, Google Analytics support, conversion rate optimisation, and GA4 to BigQuery migration.

Stoplight UK

London

API design and governance platform providing OpenAPI editing, mocking, linting, and documentation tools.

storekit

London

Take direct orders with storekit. QR code menus, takeaway tools, and online ordering - built for restaurants. No commissions. No contracts. No hassle.

Storyblok

London

Storyblok provides a content management system that offers enterprise-grade roles, workflows, approvals, and audit trails. The platform serves developers, marketers, and artificial intelligence agents, enabling organisations to manage, structure, and govern digital content across defined models, application programming interfaces, and visual editors from a single source of truth.

STRATEGIC BLUE SERVICES

London

Strategic Blue optimises cloud pricing for enterprises and UK public sector organisations by providing AWS Reserved Instance and Savings Plan management, delivering predictable savings of up to 45% without lock-in contracts. They serve CFOs, CTOs, engineers, procurement, FinOps and security teams seeking to reduce cloud costs while maintaining technical flexibility and gaining clear financial insights through their Automate and Accelerate service plans.

Stravito

London

Enterprise knowledge management platform for centralising and sharing market research and insights.

Streaem

London

Connected TV advertising platform enabling targeted, measurable campaigns across streaming and OTT environments.

Stream UK

London

Scalable chat and activity feed APIs for building messaging and social features into applications.

StreamAMG

London

Video streaming and OTT platform powering live and on-demand streaming for sports, media and enterprise.

StructureFlow

London

Legal diagram and deal visualisation software helping lawyers structure and communicate complex transactions.

Stuart

London

Partner with Stuart's delivery platform and discover our online solution for last-mile delivery services to meet your business needs. Join over 25,000 clients who trust Stuart.

STULZ

London

STULZ manufactures precision air conditioning units, air handling units, chillers and humidity control systems for data centres and mission-critical applications. The company has over 75 years of experience in the cooling sector and serves customers through a global network. Products are designed to operate energy-efficiently and reduce CO2 footprint through customised configurations suited to the specific needs of each installation. STULZ UK provides products and support for data centre cooling requirements in the United Kingdom.

SULLIVAN & STANLEY

London

SumUp UK

London

Small business payment solutions provider offering card readers, EPOS and business accounts.

SUNRISE SOFTWARE

London

Sunrise Software provides service management software for UK service desks, offering a configurable platform with self-service portal, SDI-compliant reporting, and integrations. It serves organisations across public and private sectors, including NHS trusts, councils, education, and service providers, supporting IT, HR, facilities, and shared services teams.

Superblocks UK

London

Developer-centric low-code platform for building secure internal tools and workflows that engineers can customise in code.

Supercharge London

London

Supercharge is a digital product company that builds AI-enabled products and services. It offers product strategy, software engineering, data, managed services, and agentic AI engineering, working with clients in energy, healthcare, finance, insurance, mobility, and the public sector. The company has offices in London, New York, Amsterdam, Helsinki, Budapest, and Vienna.

SUPPECO

London

Support Tree

London

Support Tree is a London-based managed IT support provider for FCA-regulated and audit-ready firms. It uses its Root.12 framework, a twelve-point audit spanning people, systems and governance, to give clients a scored, evidenced compliance position, and offers an outcome guarantee for Cyber Essentials and CE+ accreditation.

SUREVINE

London

Surevine builds secure, scalable collaboration solutions for security-conscious organisations, providing software engineering, systems integration, consultancy, and ongoing support to enable secure digital services. The company serves clients requiring high assurance in defence, national security, and complex legacy environments, leveraging deep UK national security experience to deliver cross-domain solutions and assured AI capabilities.

Suvera

London

Digital-first chronic disease management platform supporting NHS practices to deliver proactive long-term condition care.

SWIFT STRATEGIES

London

Swift Strategies is a management consultancy that supports organisations through complex transformation programmes, working client-side as a collaborative delivery partner under shared goals. They serve public and private sector organisations, with deep experience in UK government and regulated environments, delivering digital, data and technology transformation, corporate services transformation, cloud procurement and programme recovery for large, complex organisations.

SWIFTPRO CORPORATION UK

London

Swiftpro Corporation Limited provides remote access software through its Auriga platform, offering cost-effective solutions for IT support professionals and managers working with remote staff. It also delivers custom software development services via Swiftpro Digital for sectors including government, higher education, recruitment, energy, banking, finance, insurance, and mining.