Leaders of devolved administrations must not '˜undermine' Brexit negotiations

British Prime Minister Theresa May Picture AP/Alastair Grant

Downing Street said leaders of the devolved administrations must not 'undermine' Brexit negotiations.

Asked about calls for different parts of the UK to be able to opt in or out of the single market, the Prime Minister’s official spokeswoman said a united UK negotiating position is “vital to protect the UK’s interest as a whole”.

“We need to make sure we are not putting up barriers to trade within the UK.”