LONDON:They've got butlers, valets, meals by Heston Blumenthal – oh and Hyde Park out the back

LONDON has shot to the top of world’s most expensive property list with the launch yesterday of One Hyde Park, a series of glass apartment blocks in Knightsbridge, where the average unit costs £6,000 a square foot and a penthouse will set you back a staggering £140 million.

Over 300 celebrity guests were invited to an extravagant launch party yesterday for the development which has Hyde Park as its back garden and Harrods Food Hall for its local supermarket.

Built by developers the Candy Brothers, backed by a company owned by the Qatari prime minister, Sheikh Hamad bin Jassim bin Jabr Al Thani.

Residents of One Hyde Park will be able to call on butlers and valets to make their life easier, while meals can be trolleyed in from next door Mandarin Oriental Hotel’s two restaurants, one of which is overseen by Heston Blumenthal. The apartments are angled so that most of them have a view of the park, while those at the very front will look across the road to Harvey Nichols department store.

Facilities include a cinema, a swimming pool, a gym, a golf simulator and a wine cellar.