Boris Johnson’s latest reset of 10 Downing Street kicked off in dramatic fashion last week with the announcement that four of his senior advisers were quitting – followed by the news that some familiar faces were coming in to save the day.

But with a new Chief of Staff, Director of Comms, Head of Policy, and Permanent Secretary, exactly how new is the new-look No.10? Can a change of staff save a Prime Minister? Can a ministerial Chief of Staff avoid competing with the Prime Minister? And how do the trials and tribulations of Johnson’s No10 compare with the experiences of those who worked there before?

This special edition dives into the organisation idiosyncrasies of No.10 and the confusing mix of roles that support the PM, and asks whether Johnson’s reset will make a difference. Catherine Haddon presents, with the IfG’s Alex Thomas and guests Gavin Barwell, formerly Chief of Staff to Theresa May, and Kate Fall, who worked in No.10 as David Cameron’s deputy chief of staff.

Audio production by Candice McKenzie

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Resignations and resets – Boris Johnson’s new No. 10