Actor and comedian Tony Robinson, a former member of Labour's ruling National Executive Committee, has quit the party.
The Blackadder star said he was leaving after nearly 45 years because of "s**t" leadership and the party's stance on Brexit and antisemitism.
Writing on Twitter, he said: "I've left the Labour Party after nearly 45 years of service at branch, constituency and NEC levels, partly because of its continued duplicity on Brexit, partly because of its antisemitism, but also because its leadership is complete s**t."
Robinson is a supporter of continued UK membership of the European Union and has spoken at rallies of the People's Vote campaign for a second referendum.
Responding to his tweet, actress Tracy Ann Oberman wrote: "It’s so sad when we come to the realisation that it’s not a place for us anymore. I feel your pain, Tony. Huge part of our identity - gone x".
And independent councillor, Danny Hackett, posted: "Well done. I know it’s not easy."