Conservative leadership hopeful Boris Johnson has led tributes to the Prime Minister, who announced a date for her resignation today.
The former foreign secretary - who is the bookies' favourite to become the next Tory leader - tweeted: "A very dignified statement from Theresa May.
"Thank you for your stoical service to our country and the Conservative Party. It is now time to follow her urgings: to come together and deliver Brexit."
And potential leadership candidate Jeremy Hunt said she had faced the "huge task" of delivering Brexit with "courage and resolve".
"The NHS will have an extra £20 billion thanks to her support, and she leaves the country safer and more secure. A true public servant," he wrote online.
In a speech announcing her resignation this morning, Mrs May said it would "remain a matter of deep regret" that she did not see Brexit through, fighting back tears as she concluded her statement.
She will leave her post as Prime Mininster on June 7.
Mrs May's husband Philip and closest aides watched her speech from the street outside Number 10.
Former Commons leader Andrea Leadsom, who resigned over the Prime Minister's Brexit policy on Wednesday, said she wished Mrs May "all the best" following the statement.
And environment secretary Michael Gove called it a "moving speech".
He tweeted: "A moving speech from a Prime Minister who deserves our respect and gratitude. Thank you Theresa May."
Health secretary Matt Hancock echoed Mr Gove's well wishes, thanking the Prime Minister for her work.
"Incredibly moving and dignified speech from the Prime Minister. She has given all in service of her country. Thank you Theresa," he posted on Twitter.