The socialite, also known for his association with Prince William and Kate Middleton at St Andrews University, appeared on several reality TV shows over the years, including Big Brother season 11 on Channel 4 in 2010.
It is understood he plunged around 100 feet from the rooftop bar of the five-star Hilton hotel on Thursday night.
Metropolitan Police were dispatched to investigate reports of a ‘man on the roof’ after which he was found dead.
In a statement, a spokesperson said: ‘Officers responded to concerns for a man on the roof of a building in Cockspur Street, Westminster at 23:02 hours on Thursday, 30 October.
‘The man sadly fell from height. Despite the best efforts from the London Ambulance service, he was sadly pronounced dead at the scene.
Asyia Iftikhar