The estate agent comparison website attributes this surge to Labour’s mansion tax proposals, which stoked concerns over the high-end property market among wealthy buyers, and deterred sellers from listing.

The figures point to a significant decline in the number of expensive properties on the market in the four weeks preceding the election.

In the week beginning 6 April, 246 homes were listed for sale at £2m or more. In the week of the Election, 294 were listed – this figure has now climbed to 639, meaning a six week increase of 160 per cent, and a two week increase of 117 per cent.

The number of less expensive properties on the market has significantly increased too. The figures show the number of homes for sale at £500,000 increased by 66 per cent (to 4,028) during the same period.

“The increase in the number of £2m-plus properties listed after the election clearly demonstrates the effect that the possibility of the mansion tax was having on the high-end property market,” Colby Short, co-founder of GetAgent, said.

“The fall in demand for these kind of properties pending the outcome of the election saw owners holding off listing them.”