Billionaire Ravi Ruia bought a £113 million (about Rs 1,200 crore) London mansion linked to Russian property investor Andrey Goncharenko in one of the UK capital’s biggest residential deals in recent years. The family office of Ruia, who co-owns Essar Group, purchased the Hanover Lodge mansion overlooking Regent’s Park at 150 Park Road this month through a sale of the home’s Gibraltar-incorporated holding company, according to a person familiar with the matter.