This election saw the best performance ever by the Green Party (UK) (formerly the Ecology Party), collecting over 2 million votes and 15% of the vote share.

It had only received 70,853 as the Ecology Party in the previous election.

However, because of the first past the post system, the Green Party did not gain a single MEP, while the Scottish National Party received 1 seat with only 3% of the vote share.

The Green Party's vote total of 2,299,287 remains its best performance in a national election, as does its percentage result of 14.5%.

Two by-elections to the British Parliament also took place on the same day in the Vauxhall and Glasgow Central constituencies - Labour held both seats.