The British High Commission in New Delhi serves as the United Kingdom's principal diplomatic mission in India, located at Shantipath in the diplomatic enclave of Chanakyapuri. As both the UK and India are Commonwealth countries, the diplomatic mission is called a 'High Commission' rather than embassy, and is headed by a High Commissioner rather than Ambassador. British High Commissioner Lindy Cameron leads the mission representing UK government interests across India. The High Commission provides comprehensive consular services to British nationals throughout India, processes visa applications for Indian residents traveling to the United Kingdom, and facilitates bilateral relations between the UK and India across all domains including political cooperation, economic ties, defense and security, development partnership, climate action, education and research, cultural exchange, and people-to-people connections. The UK and India share deep historical ties and maintain a modern, forward-looking strategic partnership characterized as a 'Comprehensive Strategic Partnership.' Both countries are leading democracies, share English language, legal traditions rooted in common law, parliamentary systems, and vibrant civil societies. A historic milestone was achieved on July 24, 2025 when the UK and India signed the Comprehensive Economic and Trade Agreement (CETA), the UK's most significant trade deal since Brexit and India's first comprehensive FTA with a major European economy. This landmark agreement grants duty-free access to 99% of India's exports to the UK, targets doubling bilateral trade from current levels to approximately USD 120 billion by 2030, and commits both countries to enhanced investment, services trade, regulatory cooperation, and collaboration on emerging technologies. Bilateral trade in goods and services reached £44.1 billion (approximately USD 56 billion) in the four quarters to end of Q1 2025, an increase of 10.1% year-on-year. The UK is India's 6th-largest source of Foreign Direct Investment with cumulative FDI inflows of USD 35.8 billion from April 2000 to March 2025. Over 667 British companies operate in India employing more than 500,000 people across sectors including financial services, consumer goods, automotive, pharmaceuticals, technology, consulting, education, and infrastructure. Major British investments include Unilever (Hindustan Unilever is one of India's largest FMCG companies), HSBC, Standard Chartered, Vodafone Idea, British Petroleum, Diageo, Rolls-Royce, BAE Systems, GlaxoSmithKline, AstraZeneca, and numerous others. Conversely, 971 Indian companies operate in the UK employing over 100,000 people, making India one of top job creators in UK. Indian companies including Tata Group, Infosys, Wipro, Tech Mahindra, and others have significant UK operations. The UK maintains extensive diplomatic presence in India with Deputy High Commissions in Ahmedabad (serving Gujarat, Dadra and Nagar Haveli, Daman and Diu), Chandigarh (serving Punjab, Haryana, Himachal Pradesh, Jammu & Kashmir, Uttarakhand), Chennai (serving Tamil Nadu, Puducherry, Andaman & Nicobar Islands), Bengaluru (serving Karnataka), Goa (serving Goa), Hyderabad (serving Telangana, Andhra Pradesh), Kolkata (serving West Bengal, Bihar, Jharkhand, Odisha, Sikkim, northeastern states), and Mumbai (serving Maharashtra, Chhattisgarh, Madhya Pradesh). The British diaspora in India exceeds 40,000 registered British nationals plus significant numbers of dual nationals and British Overseas Citizens, including business professionals, teachers and educators, retirees, students, development workers, and families, concentrated in major metros including Delhi NCR, Mumbai, Bengaluru, Chennai, Pune, Goa, and Kolkata.