LONDON, May 8 (Xinhua) -- The British Green Party on Wednesday launched its European Parliament elections campaign while promising to be "tough on Brexit."
Following their gains in last week's local polls in Britain, the leaders of the Green Party urged voters to say "Yes to Europe, No to climate change."
They vowed to campaign for another referendum on Brexit, which they called "an unforgivable act of intergenerational betrayal."
The Greens gained 185 seats in the council elections on May 3 amid widespread anger at the main political parties.
The Brexit Party and Change UK are among the other independent political groups in the UK to take part in the European Parliament elections, which will kick off on May 23.
David Lidington, British Prime Minister Theresa May's de facto deputy, said Tuesday that the UK will have to hold European elections, despite hopes from the British government a Brexit deal would be done by then.
May said the UK would not have to take part if MPs agreed a Brexit plan first.
Lidington said that "regrettably", it is "not going to be possible to finish that process" before the date the UK legally has to take part. He said the British government would try to make the delay "as short as possible".
The UK was originally due to leave the European Union on March 29, but as no deal was agreed by the British Parliament, the European Union extended the deadline to Oct. 31.
