Lord Michael Heseltine has said that the Conservative and Labour parties are “off their heads” for getting rid of politicians like himself and Alastair Campbell.
Iain Duncan Smith has described the court case in which Boris Johnson will face accusations of misconduct in public office as “ludicrous”.
Jeremy Corbyn said an election or referendum is now the "only way out" of the Brexit crisis following mounting pressure on the Labour leader to back a public vote.
The former MP George Galloway has announced plans to try and prosecute Alastair Campbell over the Iraq War, in response to Boris Johnson facing court over accusations of misconduct.
The decision to expel former Tony Blair adviser Alastair Campbell was “not helpful in the current political climate”, a Labour MP has suggested.
Health secretary Matt Hancock has described the Brexit Party as a “protest movement”, after the party won 29 seats in the European elections last week.
The chairman of the Conservative Muslim Forum has said that he will resign from the party if Boris Johnson becomes the next party leader.
Theresa May has urged her successor to seek a consensus over Brexit as Brussels stressed there could be "no renegotiation" of the Withdrawal Agreement.
Tory MP Nigel Evans said claims that leave voters were "thick" were false.
The SNP's Westminster leader called for the Labour leader to work alongside his party and call for a second referendum.
The justice secretary has said that he is not Boris Johnson’s “obvious voter” after the former foreign secretary put his name forward to be the next Tory leader.
The Liberal Democrat leader has said that a coalition between his party and Labour is “completely inconceivable” while Jeremy Corbyn is still leader.
It would be a “catastrophe” if Boris Johnson became Prime Minister, Alastair Campbell has said.
Conservative MP Ed Vaizey has said that he will not “take part in this hypocrisy fest” around Theresa May’s resignation.
The Fire Brigade Union has said that Theresa May was “disgraceful” to mention Grenfell when she announced her resignation date on Friday.
Potential contenders to replace Mrs May as Conservative leader have lined up to pay tribute to the "dignified" manner in which she announced her resignation.
One of the constant critics of outgoing Prime Minister Theresa May has called her resignation “a very sad occasion”.
Theresa May was never a leader in the way the public “would expect a leader to be”, according to former Tory cabinet member David Mellor.
The Conservative MP said he was sceptical that the Prime Minister will announce her resignation date today.
The former attorney general said a second referendum would give the country a "way out" of the Brexit impasse.
Theresa May is expected to set out when she will quit Number 10 after a Cabinet revolt over her Brexit plan.
Theresa May has been urged by Cabinet members to scrap her heavily criticised Brexit legislation as speculation mounts about her future.
Theresa May has shelved plans to introduce key Brexit legislation to implement the Withdrawal Agreement in the first week of June following a major backlash from MPs.
Brexiteer MP Kate Hoey has said that she “still defends” Jeremy Corbyn because he is “outnumbered” by Remain-supporting MPs within the Labour Party.
The former Conservative leader said the next person at the helm had to be a "leading Brexiteer".
Pressure is intensifying on Theresa May to resign after Commons Leader Andrea Leadsom quit the Cabinet over the Prime Minister's Brexit plan.
The joint executive secretary of the 1922 Committee said he would be calling for a vote of no confidence in the Prime Minister.
Conservative MP Nadine Dorries announced she would be backing Boris Johnson in a leadership contest.
Theresa May has urged the Labour leader to compromise and back her Brexit deal after the proposals received a hostile response from critics on her own side.
The Prime Minister has said that the Withdrawal Agreement Bill will include “a requirement to vote on whether to hold a second referendum”.
Conservative MP Andrew Bridgen has said that “no one can find the off-button for the Maybot” as Theresa May is yet to set a date for her departure.
The Brexit Party leader responds to having a milkshake thrown over him during a vist to Newcastle.
The Conservative MP slapped down Philip Hammond's claims that a no-deal Brexit would be "damaging".
The chancellor is to warn Tory leadership hopefuls against advocating for a "damaging" no-deal Brexit.
The health secretary refused to rule out running for leadership of the Conservatives in the future.
The Conservative peer said his party would be "entitled" to kick him out after he pledged his support to the Liberal Democrats.
Andrew Bridgen has insisted the Prime Minister's Withdrawal Agreement Bill will fail to win the support of MPs.
Theresa May is set to begin discussions with senior ministers on her proposed new "bold offer" to MPs in a final attempt to get her Brexit deal through Parliament.
Theresa May has been described as an “isolated beleaguered Prime Minister” by Brexiteer MP Andrew Bridgen.
The Conservative MP said he would be voting "for a Brexiteer" to take over the party.
The Conservative MP revealed he would be willing to stand as an independent MP in the next general election.
Cross-party Brexit talks are set to close with no agreement reached, it has been reported.
Theresa May has agreed to set a timetable for the election of her successor as Tory leader, the chairman of the 1922 Committee has said.
Supervision of all offenders in England and Wales is being brought back under public control, the justice secretary has announced.
Theresa May is facing a showdown meeting with senior Tories, who are demanding she sets a firm resignation date.
An MP has accused Theresa May of making the United Kingdom “an international laughing stock” with her attempts to negotiate a Brexit deal.
The Change UK leader said she would not allow Tony Blair to join her party, claiming he was too "tarnished".
The Tory MP said there was no "logic" in getting MPs to vote on the Withdrawal Agreement Bill for a fourth time.
A fourth 'meaningful vote' will take place on the Withdrawal Agreement Bill in early June, Downing Street has announced.
The former agriculture minister has called for new laws prohibiting the killing or taking of hares during the breeding season.