CHRISTCHURCH MP Sir Christopher Chope claimed some members of the Cabinet had undermined the Conservative party manifesto with "treacherous comments".

Speaking on Thursday, Sir Christopher asked leader of the the House of Commons Andrea Leadsom if she would hold an early debate on collective Cabinet responsibility and its meaning in the current circumstances.

He said: "Will my right honourable friend undertake to lead that debate, so that she can explain to the House the frustration that we all feel on her behalf at having the 2017 Conservative party manifesto, which she supported on the Today programme this week, undermined by treacherous comments from our own cabinet colleagues?"

Collective Cabinet responsibility is a constitutional convention in which all members of the Cabinet publicly support the decisions it makes, even if they disagree privately.

Sir Christopher's frustrations related to comments made by ministers on Brexit.

In response, Ms Leadsom said the cabinet was in absolute agreement that the referendum result will be delivered and the United Kingdom will leave the European Union on March 29. She added that it remains Government policy and ministers will continue to prepare for all eventualities.