Donald Tusk’s office was notified by Tim Barrow, the UK’s ambassador to the EU, this morning, Downing Street says.

Here’s David Davis’s statement:

“Last June, the people of the UK made the historic decision to leave the EU. Next Wednesday, the Government will deliver on that decision and formally start the process by triggering Article 50

“We are on the threshold of the most important negotiation for this country for a generation.

“The Government is clear in its aims: a deal that works for every nation and region of the UK and indeed for all of Europe – a new, positive partnership between the UK and our friends and allies in the European Union.”

As for an early general election, Number 10 is keen to kill the calls for it off. A spokesman said: “There’s not going to be one.”