As the brains behind Starmer’s leadership campaign, McSweeney (47) is credited with having brought the prime minister to power. He entered No 10 as head of political strategy, in charge of charting the party’s path to another victory in five years’ time.

Who is Labour election guru replacing Sue Gray and behind Keir Starmer’s rise to power? - Sue Gray’s departure has triggered a wider reshuffle of Number 10, and Morgan McSweeney is set to take over he

British Prime Minister Keir Starmer on Monday named a new chief of staff after a high-profile resignation amid a wider shake-up of his top team at 10 Downing Street to mark his Labour Party government’s first 100 days in office.

She is leaving after rows over pay and donations and will take up a new role as the prime minister's regional envoy.

Parliament is set to return on Monday after a conference recess that saw the Government wrapped up in rows over Ms Gray's salary and freebies for ministers and MPs

It's reported Ms Gray, who was criticised for being paid more than the PM, has had her pay trimmed down in a new role.

Sue Gray’s departure has triggered a wider reshuffle of Number 10, and Morgan McSweeney is set to take over her role

Mr McSweeney, 47, credited with transforming the Labour Party into an election-winning machine after the Corbyn era, has sealed his victory in a bitter power struggle with Ms Gray (pictured).

Then working as a senior civil servant, Sue Gray’s findings on Partygate were hugely anticipated and, following a Met Police investigation into Downing Street events during 2020 and 2021 when lockdown rules set by the Government were in place,