Best Technical Consulting Agencies in United Kingdom

NYSE-listed (DAVA) global technology services company founded 2000 in London, delivering agile enterprise software development, digital consulting, test automation, cloud services, AI, and data analytics for clients in payments, financial services, telecom, retail, and healthcare.

Global IT services, consulting, and business solutions organization headquartered in Mumbai, India, part of the Tata Group, with over 500,000 consultants across 46+ countries, offering consulting-led, cognitive-powered IT, business, and engineering services through its Location Independent Agile del

Euronext Paris-listed (CAP) global IT services and consulting company headquartered in Paris, founded 1967, with over 340,000 employees in 50+ countries, providing strategy and transformation consulting, cloud, data and AI, cybersecurity, digital engineering, and application development services, in

Euronext Paris-listed IT services and consulting company headquartered in Bezons, France, specializing in hi-tech transactional services, unified communications, cloud, big data, and cybersecurity, operating in 54+ countries under the Atos and Eviden brands.

NYSE-listed (G) global professional services firm headquartered in New York, founded 1997 as a GE unit in Gurgaon, India, providing digital transformation, business process management, and AI-powered analytics to clients in 30+ countries.

NASDAQ-listed (DOX) telecommunications software and services company, operating in 28+ countries, providing customer experience, billing, and network software primarily for Tier-1 communications service providers, with major operations across EMEA, Israel, North America, and Latin America.

Software development and IT outsourcing company founded 2002 in Kyiv, Ukraine by Danish entrepreneur Torben Majgaard, headquartered in London, providing product engineering, experience design, and AI integration services with a client-owned team model and 4,000+ engineers.

NYSE-listed (ACN) global professional services company headquartered in Dublin, Ireland, founded 1989 as Andersen Consulting, with approximately 774,000 employees across 120+ countries, providing strategy, consulting, technology, and operations services including Accenture Song.

Japanese multinational IT services and consulting company headquartered in Tokyo, part of NTT Group, serving clients in over 70 countries through consulting, industry solutions, business process services, IT modernization, and managed services, including its NTT DATA Business Solutions subsidiary.

Euronext Paris-listed (SOP) European consulting, digital services, and software development company headquartered in Paris/Annecy, France, with 50,000 consultants across nearly 30 countries, offering consulting, systems integration, cybersecurity, and cloud services.

NYSE-listed (WNS) Indian multinational business process management company headquartered across New York, London, and Mumbai, providing robotic process automation, AI/cognitive computing, and digital transformation services, being acquired by Capgemini as of 2025.

Digital business transformation company, part of Publicis Groupe, headquartered in Boston with a major New York presence, combining strategy, consulting, customer experience, and engineering across 26+ countries for retail, finance, energy, and automotive clients.