George Galloway has claimed Tony Blair is moving into "openly treasonous territory" by meeting with Jean-Claude Juncker.
The latest round of Brexit talks on Friday was slightly overshadowed by reports of a meeting nearby between the former Prime Minister and the president of the European Commission.
Both have been roundly criticised for this meeting, and accusations of betrayal were thrown at Blair by Tory MPs.
Our host didn't hold back, asking his talkRADIO audience: "What was he doing, kissing Juncker in Europe and negotiating as to how he and his fifth column could wreck the decision by 17.4 million people just last year to leave the EU?
"I despise and loath Tony Blair, but I have to say, he’s now moving into openly treasonous territory.
"This fifth columnist is operating as an agent of foreign powers in a matter of great moment to the future of every person on this island. It’s about time someone called that out.
"He’s trying not just to destroy the policy of the elected government in Britain, but the wish of 17 and a half million people in Britain."