Brexit activist Darren Grimes has won an appeal against a £20,000 fine imposed by the Electoral Commission for his activity during the 2016 Brexit referendum.

Mr Grimes, who was 22 years old at the time of the referendum, was fined by the Commission in connection with his student Brexit group BeLeave.

The Electoral Commission - which regulates political parties, members and campaigners - fined Mr Grimes last year after concluding that he had wrongly reported almost £700,000 of spending.

The watchdog found that BeLeave "spent more than £675,000 with (Canadian data firm) Aggregate IQ under a common plan with Vote Leave", which should have been declared by the latter but was not.

This spending took Vote Leave over its £7 million legal spending limit by almost £500,000.

But Mr Grimes' lawyers argued that the commission had misinterpreted the law and set a key legal test "too high" on whether BeLeave had been correctly registered on official forms, the court heard.

Mr Grimes said that he had intended to register the organisation BeLeave and not himself as an individual on the forms.