The security camera in Matt Hancock’s office which videotaped the health secretary kissing his aide was an ‘outlier’ and not general policy, a ministers has said.

       Cabinet office minister Julia Lopez said that as a rule “there are not cameras sited within ministers’ offices”.

       In that regard the camera inside the Department of Health was an “outlier”, she said.

       She attempted to calm an angry House of Commons by saying that ministers would have a “better understanding of why that occurred” once the Department of Health’s official investigation was complete.

       But she faced anger from MPs, including former health ministers, who warned that national security could have been put at risk.

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       Mr Hancock dramatically resigned over the weekend after his affair was made public.

       But his decision to step down has left lingering questions, including how the videotape emerged in the first place.Conservative MP Peter Bone warned that the revelation that the health secretary’s office contained recording devices “should be of national concern. If government and parliamentary offices have recording devices in them - whether audio, visual or both - it is of the utmost concern.”