Former European Commission president Jean-Claude Juncker has described Boris Johnson as "a piece of work" who failed to understand that his Brexit deal with the EU needed to be more precise.
In an interview with LBC's Tonight with Andrew Marr, Mr Juncker said that while he liked Mr Johnson personally he had better relations with all the other British prime ministers he had worked with.
"I like him as a person. He's funny, but he's serious nevertheless. And I had better relations with all the prime ministers of Britain I've known, starting with John Major, Tony Blair, Gordon Brown, even David Cameron, then mainly Theresa May, who was a lady," he said.
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"And Boris Johnson was a piece of work, someone you cannot categorise, in normal definitions, but I liked him as a person."
Mr Juncker welcomed Rishi Sunak's Windsor Framework agreement with the EU as a "real breakthrough", although he said it gave the European institutions a greater role than some in the UK had acknowledged.
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"I think that the European Commission will have more authority than it seems. And as the European Court of Justice has been reconfirmed in its role as an arbiter when it comes to internal market questions concerning Northern Ireland," he said.
"So I think that although the deal is giving a response to the major British concerns there is a part of European Union in the deal some in Britain are trying to hide."
