Former justice secretary David Gauke has said Prime Minister Boris Johnson must obey the law on Brexit.

Referring to the PM's Incredible Hulk analogy, Mr Gauke, who lost the Tory whip over his Brexit stance, told BBC Radio 4's Today programme: "Maybe the Incredible Hulk doesn't have to comply with the law, but the British Government does.

"And if Parliament has neither supported a deal, nor supported a no-deal departure, then the law is clear that he has to seek an extension, the Prime Minister has to seek an extension and that is what he will have to do.

"That is what the law states."

Foreign Secretary Dominic Raab told BBC Radio 4's Today programme: "I think the precise implications of the legislation need to be looked at very carefully.

"We are doing that."

Mr Raab said: "The UK Government is always going to behave lawfully.

"I think the suggestion otherwise is nonsense.

"We, of course, take these considerations very seriously.

"At the same time, the legislation that was required, the surrender bill, is deeply, deeply flawed."

The Foreign Secretary added: "But the Government will comply with the law. It goes without saying, frankly."

Mr Raab said that a Brexit transition period would not be extended.

He said: "No, it is not something under consideration."

Finnish European affairs minister Tytti Tuppurainen said the UK still had not put forward any proposals that could "compensate" for the removal of the Irish backstop.

"We have to remain open and see what happens in the domestic politics of the United Kingdom," she said as she arrived at a meeting of EU ministers in Brussels.

"Of course the European Union is always ready to negotiate when a proper proposal from the United Kingdom side is presented. So far I haven't seen any proposal that would compensate the current backstop in the Withdrawal Agreement."

Belgian foreign minister Didier Reynders said Boris Johnson needed to put forward concrete proposals for a revised Brexit deal at the European Council meeting in October.

"It is very difficult to react without any concrete proposals so we will see if it's possible for Michel Barnier to receive something in the next days or in the next hours," he said.

Asked what his message to Mr Johnson was, Mr Reynders said: "To come to the council and to come, maybe, with some ideas."