“We would continue to trust the British government to fully implement the exit agreement,” Foreign Ministry spokeswoman Maria Adebahr told reporters in Berlin, which currently holds the European Union presidency.
“That is why we see yesterday's announcement in the House of Commons with concern,” she added, referring to UK plans to make unilateral changes in breach of the Withdrawal Agreement with the EU.
“Everything that has been signed must be respected,” Barnier told France Inter radio, in response to a Financial Times report claiming British Premier Boris Johnson wanted to revise agreements on Northern Ireland and state aid.
Barnier said he would discuss the report with his British counterpart David Frost during an eighth round of negotiations on a future trade deal this week.
“The important thing for me is what the Prime Minister says and does, and what the British government itself says and does,” he said.