The lawyers who worked for Boris Johnson during the committee’s investigation cost £245,000 – which has been funded by taxpayers.
The use of publicly-funded legal support was defended by a senior civil servant who said other former ministers had also received legal support during public inquiries.
He gave the Grenfell fire and infected blood products inquiries as examples of precedents, but provided no examples of inquiries carried out by MPs.
Labour’s Thangam Debbonaire, the shadow leader of the Commons, said they should make sure that Boris Johnson “pays back every penny” of the bill.