Top civil servant John Kingman quits Treasury

Acting permanent secretary due to leave in July for private sector after failing to land key Whitehall role

One of the UK Treasury's most highly experienced officials is leaving the civil service after missing out on a top Whitehall post.

John Kingman, who is filling in as acting permanent secretary to the Treasury after Sir Nicholas Macpherson stepped down last month, is expected to return to the private sector later this year.