Worlds Best Homes

Inside Britain's most expensive home – valued at £250 million

The house, acquired from the younger brother of the Sultan of Brunei, has hosted all the biggest names in Government and Royalty

Britain's most expensive house

Phones 4u founder John Caudwell has turned two mega-mansions in Mayfair into one vast property that, with an estimated value of £250 million, is thought to be Britain's most expensive private home.

Britain's most expensive house

Businessman and philanthropist Caudwell, who sold his Phones 4u chain for just under £1.5 billion in 2006, bought Mayfair House for £87 million in 2012 and a few years later embarked on a total renovation.

A post shared by Arista Design (@aristainteriors) (opens in new tab)

A photo posted by on

It was also the subject of a Channel 4 show, which aired earlier in the year, ‘Britain’s Most Expensive Home: Building for a Billionaire’ that has been described as a 'supersize Grand Designs' – that spiralled £58 million over budget.

See: Bill and Melinda Gates’ new $43 million in San Diego home

A post shared by A World of Luxury (@aworld_of_luxury) (opens in new tab)

A photo posted by on

Britain’s most expensive mansion, in central London, isn’t even John Caudwell’s main home. Rather, it’s a party retreat for his wealthy investors.

The home features a 120-capacity ballroom – a place for charity balls and evening galas.

The house is the most expensive in the UK firstly, because it is so enormous, 43,000 sq ft of living space in total and secondly, as a result of the quite staggering levels of eccentric opulence and design details that has gone into the renovation.

A post shared by Fulford flowers (@fulfordflowers1) (opens in new tab)

A photo posted by on

See: Ben Affleck's luxury country home is a masterclass in classic Southern-style

A post shared by L2i Limited (@l2i_ltd) (opens in new tab)

A photo posted by on

The property features an indoor river (below), designed to be evocative of Thailand, that meanders out from a faux cherry tree, and rungs through the house.

A post shared by Arista Design (@aristainteriors) (opens in new tab)

A photo posted by on

Then there’s the quilted, soundproofed cinema room decorated with black-and-white photographs of Hollywood stars with the faces of John Caudwell’s family superimposed.

A post shared by Arista Design (@aristainteriors) (opens in new tab)

A photo posted by on

‘The value in my house is the house itself, but I don’t keep any valuables. You can’t steal a marble staircase,’ John explained.

The home can be seen it all its glory on Channel 4 (opens in new tab).

Jennifer Ebert
Deputy Editor (Digital)

Jennifer is the Digital Editor at Homes & Gardens. Having worked in the interiors industry for a number of years, spanning many publications, she now hones her digital prowess on the 'best interiors website' in the world. Multi-skilled, Jennifer has worked in PR and marketing, and the occasional dabble in the social media, commercial and e-commerce space. Over the years, she has written about every area of the home, from compiling design houses from some of the best interior designers in the world to sourcing celebrity homes, reviewing appliances and even the odd news story or two.