Nearly two in five people who voted to remain in the EU would be upset if their child married a leave supporter, a survey shows.

The YouGov poll of 2,380 people found more than one in 10 (11 per cent) of remainers would describe themselves as “very upset” if their offspring tied the knot with a Brexiteer, while another 28 per cent said they would be “somewhat upset”.

Only 11 per cent of leave voters said they would be in any way upset if their child married a pro-EU partner.

The poll also found that 11 per cent of Labour supporters would be “very upset” if their child married a Tory, while just 2 per cent of Conservatives said they would be similarly aggrieved if the positions were reversed.

Some 28 per cent of Labour supporters and 17 per cent of Tories said they would not consider dating someone from the other political party.

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The survey also claimed 3 per cent of people could not remember how they voted in the EU referendum three years ago.