As-it-happened: Joe Biden vows to end 'season of darkness' in US - BBC News
In the biggest speech of his long public service, Joe Biden sets out his vision for a post-Trump US presidency.
Above all else, if there is a Biden Presidency, UK-US relations will snap back to something like “business as usual”.

In Downing Street and the Foreign Office, there’ll be no more of the sharply raised eyebrows, expletives even, which followed each successive Trump denunciation of America’s allies. Those condemnations of democratic leaders were often accompanied by a startling endorsement of some populist, authoritarian, foreign leader.

In stark contrast, Joe Biden has committed to an immediate return to America’s global leadership of alliances based on shared values and democratic institutions. Britain will breathe a collective sigh of relief.

In particular, candidate Biden is promising that a President Biden will “ … lead the world to take on the existential threat we face—climate change…

“I will rejoin the Paris climate agreement on day one of a Biden administration and then convene a summit of the world’s major carbon emitters, rallying nations to raise their ambitions and push progress further and faster.”

That’s hugely important to Britain, which will chair the critically important UN

Global climate change talks in Glasgow now postponed to November 2021. If Joe Biden is in the White House, not Donald Trump, that shifts the entire balance of power towards active support for more radical action. We could even imagine China and the US competing with each other in a “virtue” contest.

There is one area, however, where Britain may still find it has a mountain to climb in Washington if Joe Biden occupies the White House—trade.

He’ll be no push over agreeing the terms of a UK-US trade agreement. It was made necessary by Britain’s decision to leave the EU—something Donald Trump hailed as a triumph-- but which Joe Biden has apparently, like President Obama, always seen as a colossal mistake.