Prime Minister Theresa May has said Article 50 will only be triggered when there was a UK-wide approach.
Mrs May is in Edinburgh meeting with Scotland's First Minister Nicola Sturgeon.
The Prime Minister's visit - less than 48 hours after taking office - is aimed at showing her commitment to preserving the United Kingdom following the vote to leave the European Union.
Theresa May greeted Scotland's First Minister Nicola Sturgeon as she arrived in Edinburgh on Friday.
The prime minister is to hold a meeting with Sturgeon to show her commitment to preserving the "special union" of the UK, she said ahead of her visit.
Last month, Mrs Sturgeon said a second independence referendum was "highly likely" after the UK voted to leave the European Union.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.