The findings – based on an online survey of 4,005 UK adults from 26 May to 2 June and carried out by Public First on behalf of UK in a Changing Europe – show that only 18 per cent of Leave voters believe Brexit has gone “well” or “very well”.

Thirty per cent believe it has “neither turned out well or badly”, while 29 per cent of original Leave supporters think Brexit has subsequently had a negative economic impact on the UK.

According to the polling, 72 per cent of Leave voters now want to stop talking about Brexit.

Of Leave supporters currently unhappy with how Brexit has turned out, 70 per cent believe it could have gone well, while 18 per cent feel the decision to leave the EU could only have turned out badly.

Nearly half of that group believe Brexit could have been made to work by politicians, but the elected representatives did not try hard enough to make it succeed.

Anand Menon, director of UK in a Changing Europe, said: “While very few people think...