Jacob Rees-Mogg’s own department has more than doubled its workforce since Brexit, analysis by The Telegraph shows.
Two Whitehall departments, the Cabinet Office and the Department for Education, have seen the largest increase in staff since December 2015.
It comes amid plans to cut Civil Service jobs by 90,000 which would reduce the workforce to levels below those seen in the run-up to the Brexit vote.
Around 475,000 people worked across the government departments and their executive agencies in December 2021, up from 391,360 at the same point just months before the UK voted to leave the EU.
However, while much of the growth has been blamed on Brexit, all departments, regardless of their link to the vote, have increased in size over the period.