Billionaire Daniel Kretinsky who wants to buy Royal Mail lives in £100million 15-bedroom mansion which he once rented out to Justin Bieber - and posties have their work cut out delivering to him

Czech billionaire Daniel Krestinsky, 48, who is set to become Royal Mail's new owner, lives in one of Britain's most expensive homes, which was once put on the market for an eye-watering £100 million.