Why is the government planning to cull the civil service?

Jacob Rees-Mogg has said that the government plans to axe 91,000 posts within three years from the civil service. The argument for it is that the reduced tax burden will help the public deal with the ever-growing cost of living crisis. But will this have the desired effect and will it be anywhere near enough?

Kate Andrews talks to James Forsyth and Fraser Nelson about if the Prime Minister has the right temperament to weather this particular storm.