BRUSSELS/LONDON (Reuters) - The head of the European Commission said on Wednesday the chances of reaching a trade deal with Britain were fading by the day as the British government pushes ahead with moves that would breach their divorce treaty.

The British government announced draft legislation last week which it acknowledges would violate its international legal obligations and undercut parts of the divorce deal it signed before Britain formally left the European Union in January.

Brussels wants Prime Minister Boris Johnson to scrap what is known as the Internal Market Bill, saying it could sink talks on future trade arrangements before Britain finally leaves the EU’s orbit when a status quo transition period ends in December.

Johnson has refused.

“With every day that passes, the chances of a timely agreement do start to fade,” said Ursula von der Leyen, President of the European Commission, the EU executive.

In a speech to the European Parliament, she said the divorce agreement “cannot be unilaterally changed, disregarded or dis-applied”.

“This is a matter of law, trust and good faith ... Trust is the foundation of any strong partnership,” she said.

The EU fears a disorderly Brexit if the terms of the trade relationship are not agreed, and former British prime ministers have said breaking the law is a step too far that undermines the country’s reputation.

Johnson has said the bill was essential to counter “absurd” threats from Brussels including that London be required to put up trade barriers between Britain and its province of Northern Ireland and that the EU would impose a food blockade. Such steps, he said, would threaten the unity of the United Kingdom.

Asked on Wednesday if the EU was negotiating in good faith, Johnson said: “I don’t believe they are.”

“Perhaps they will prove my suspicions wrong,” Johnson said.

“WAY THROUGH”

The Internal Market Bill is being debated by the British parliament, where Johnson faces opposition from some members of his governing Conservative Party.

Justice Secretary Robert Buckland said the government sees a ‘way through’ the parliamentary maze, and Johnson has been talking to the party rebels.

Buckland said there had been talks with Bob Neill, a Conservative lawmaker who has proposed amending the bill to ensure that any attempt to use the clauses that breach the Brexit divorce agreement receive prior approval from parliament.

Britain’s Northern Ireland minister Brandon Lewis told parliament he stood by remarks he made last week that the bill would “break international law in a very specific and limited way”.

But Scotland’s top law adviser to the British government, Richard Keen, has offered his resignation to Johnson over his plan to break international law, the BBC reported on Wednesday.

EU diplomatic sources told Reuters that if the bill was passed in its current form, Brussels felt it could not deal with London.