Sir Chris Wormald has been named as the new cabinet secretary and head of the civil service.
The 56-year-old will replace Simon Case after he announced in September he would stand down as cabinet secretary at the end of the year for health reasons but would remain in place while his successor was chosen.
Sir Chris is currently permanent secretary at the Department of Health and Social Care, advising the environment secretary on policy and managing the budget.
He beat other senior current and former civil servants to the job, which was advertised with a £200,000 salary.
The other contenders were: Sir Olly Robbins, a former director-general of the civil service who was involved in Brexit talks, Dame Antonia Romeo, permanent secretary at the Ministry of Justice, and Tamara Finkelstein, permanent secretary at department for environment, food and rural affairs.
Mr Case, 45, was appointed in September 2020 and served four different prime ministers.
In an email to the civil service announcing his resignation in September, Mr Case said: “As many of you know, I have been undergoing medical treatment for a neurological condition over the last 18 months and, whilst the spirit remains willing, the body is not.
“It is a shame that I feel I have to spell this out, but my decision is solely to do with my health and nothing to do with anything else.”
Mr Case announced his resignation following a difficult few weeks for Downing Street during which damaging leaks and internal rows took over the narrative, with Sir Keir growing increasingly frustrated.
The top civil servant was said to have had a tense relationship with Sue Gray, Sir Keir’s former chief of staff who stepped down in October following accusations from some Labour figures about the party’s handling of ministers taking freebies.
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