One in six Leave voters (18%) now say that it was wrong for Britain to choose to leave the EU, however, 66% still say Britain made the right decision. Younger voters are particularly critical of Brexit, with three-quarters of 18-24 year olds saying Britain was wrong to leave, compared with just one in ten who believe it was the right decision.

Lawyers for the European Union on Tuesday told an arbitration tribunal that Britain's ban of fishing for sandeels in its North Sea waters breached an agreement on fishing rights both sides struck after Brexit.

The row was triggered when Britain barred EU fishermen from catching sand eels in English and Scottish waters last March

The EU and UK face their first post-Brexit legal showdown as the bloc challenges Britain's North Sea sandeel fishing ban – a minor environmental case with major political implications.

The tiny sand eel is used widely as bait and in animal feed — but it's also an important food source for puffins and other seabirds.