Britain on Monday faced warnings it risked its international reputation if it reneged on its agreement to leave the European Union, as Brexit trade talks reached a crucial final stage.

The Financial Times reported that Prime Minister Boris Johnson was planning new legislation that would override parts of the Withdrawal Agreement treaty that Britain and the EU agreed in October last year.

It cited three people close to the plans as saying a bill to be put before parliament this week would undermine agreements relating to Northern Ireland customs and state aid.