Indian vaccine baron to buy London's most expensive mansion

Billionaire Adar Poonawalla is set to pay $175 million for a house near Hyde Park in the UK's biggest property deal this year

Adar Poonawalla, the CEO of Serum Institute of India (SII), the largest vaccine manufacturing company in the world by volume, has sealed a deal to purchase the decades-old Aberconway House in London for almost $175 million.

According to UK media reports, it will be t