Angela Rayner has added an £800,000 seaside apartment to her burgeoning property empire – at a time when her department is cracking down on second-home owners.

The Housing Secretary's new 'holiday home' in Hove is in addition to the £650,000 house she owns in her constituency and a three-bedroom grace-and-favour flat in Admiralty House – prompting the Tories last night to demand that she 'come clean' about her council tax arrangements.

It comes as Ms Rayner's department has started levying an extra 100 per cent council tax chargeon second homes.

The measure, inherited from the last Tory government, is in response to complaints that locals are being frozen out of the housing market in popular tourist destinations – such as Hove.

The Cabinet minister became known as 'Two Homes Rayner' last year after The Mail On Sunday revealed that she had shuttled between two right-to-buy council properties early in her marriage. It was claimed that she rented out her house while living in her then husband's property.