The former chancellor of the exchequer in Britain Rishi Sunak has declared he is running to be the next Conservative Party leader and prime minister after days of speculation, during which he amassed the support of well over 100 MPs.

In a tweet announcing his candidacy, Sunak writes “the United Kingdom is a great country but we face a profound economic crisis.

Sunak says he can fix the economy, unite the party and deliver for the country, and that although the challenges being faced now are even greater than those posed by the pandemic, the opportunities are phenomenal if the right choices are made.

Promising to deliver on the 2019 manifesto which won the Tories 43.6% of the vote, Sunak says that under him there will be “integrity, professionalism and accountability at every level of government”.

Meanwhile, Business Secretary Jacob Rees-Mogg tells the BBC Boris Johnson “will clearly stand” for the party leadership.

The BBC’s tally of public declarations of support currently has 144 MPs for Sunak, 56 for Johnson and 23 for Penny Mordaunt – candidates need 100 by Monday.

Penny Mordaunt tells a Sunday current affairs programme she regrets Liz Truss’s mini-budget and would keep Jeremy Hunt as chancellor.

And Labour leader Sir Keir Starmer reiterates his call for a general election, adding any incoming government will have to pick up the mess.