Now if Trump just happened to be successful in a court challenge...
First Minister of Wales Mark Drakeford tweeted that he was looking forward to working with Mr Biden "to build on the strong links between Wales and USA".
Sir Keir said on Twitter that Mr Biden's campaign was based on "decency, integrity, compassion and strength", which are "values that we in the United Kingdom share".
The leader of the Liberal Democrats, Sir Ed Davey, said the result was "a great victory for social justice, climate action and democracy".
First Minister of Scotland Nicola Sturgeon also shared her congratulations, while SNP Westminster leader Ian Blackford said the win "gives great hope to progressives here in Scotland and around the world".
Mr Johnson said in a statement on Twitter on Saturday: "The US is our important ally and I look forward to working closely together on our shared priorities, from climate change to trade and security."
Mr Johnson also congratulated Mr Biden's running mate, Kamala Harris, on "her historic achievement". She will be the country's first female vice-president.
https://www.bbc.co.uk/news/uk-politics-54840746