The price of the Grade II-listed Aberconway House near Hyde Park was the second highest ever in London.
It was agreed by self-proclaimed “prince of vaccines” Adar Poonawalla, 42, the boss of Serum Institute of India, the world’s largest jab producer.
The five-storey, 23,000sq ft house in Mayfair, Central London, is being sold by Dominika Kulczyk, daughter of the late businessman Jan Kulczyk, who was Poland’s richest man.
The property will be bought by Serum Life Sciences, the UK arm of SII, which produces half of all AstraZeneca Covid injections.
SII also makes vaccines against polio, diphtheria, tetanus, hepatitis B and measles.
Mr Poonawalla was educated at St Edmund’s School in Canterbury and the University of Westminster.
In 2021 his family was India’s sixth richest, with an estimated £12billion fortune, according to the Times of India.
A source said the house would be a base for the company and family while in the UK.
London’s priciest house is 2-8a Rutland Gate, Knightsbridge, sold in 2020 by the estate of former Saudi crown prince Sultan bin Abdulaziz for £210million.
