Nearly half a million Londoners are now property millionaires’ as the number of homes worth £1 million shot up across the country, according to new research. It’s estimated that a staggering 430,720 of 775,000 properties in Britain are valued at least £1 million because of their “desired location and postcode“, according to website Zoopla.

The postcode with the most million-pound properties was SW6, covering Fulham and Parson’s Green with 14,020.

Next was NW3, covering Belsize Park and Hampstead, with 12,500, and then N1, which takes in Islington and parts of Shoreditch, with 11,301.

There are now 768,553 homes across Britain valued at at least £1 million, according to Zoopla.

This is a jump of 22.95% or 143,476 more property millionaires since August 2016 when the data was previously analysed.

With large concentrations of property millionaires in London and the South East of England, the research found there is more than double the number of million-pound properties in Guildford, Surrey than there are across the whole of Wales.

Guildford was identified as the top million-pound property hotspot outside London, with 5,889 homes there valued at £1 million-plus.

Wales was found to have 2,223 homes worth £1 million or more.

Zoopla released the research to mark the launch of its new property calculator tool which tells homeowners when the value of their own property may eventually reach the £1 million mark.

Zoopla said places with particularly high concentrations of million-pound homes also include Cambridge, Reading, Oxford, St Albans, Bristol and Edinburgh.