Rishi Sunak said he had no control over the timings of events where he will probably be missing from the Commons.
Labour MP Sir Chris Bryant asked him when a first-rate minister had missed two sessions of PMQs in a row, after which challenged him about not attending sessions within the Commons about now-former MPs Owen Paterson and Boris Johnson.
Mr Sunak said he would miss PMQs this week to attend an event celebrating the seventy fifth anniversary of the NHS and next week, he can be at a Nato summit.
Sir Chris Bryant claimed that fellow Labour MP Wes Streeting had, on 19 June, voted on the report into Mr Johnson’s misleading of Parliament over Partygate, but later said that was not correct.
Rishi Sunak before Liaison Committee
BBC coverage of PMQs in text and video