Scotland’s First Minister has written to Theresa May seeking “urgent clarity” on plans for transitional arrangements after Brexit.
Nicola Sturgeon said the Prime Minister’s proposal for a two-year implementation period had been “seriously undermined” in recent days.
Mrs May signalled on Monday that there will be no transition deal unless the UK settles its final trading relationship with the European Union next year.
Businesses have pressed the UK Government to agree the terms of transition with the EU by Christmas.
However, earlier this month, EU negotiators said talks between the two sides had stalled, with trade discussions likely to be delayed by months, increasing the chance of no deal being agreed.
Ms Sturgeon said she was “increasingly concerned by the possibility” that the negotiations may result in a no deal scenario.