Southwark Council has a new leader. Councillor Sarah King was elected at the Council Assembly meeting on 9 July 2025, following the resignation of Councillor Kieron Williams.

The Election of Leader of the Council report notes that Councillor Williams gave notice of his intention to step down in July 2025, but the specific reasons for his departure were not detailed in the meeting information.

Councillor King's term will last until the first annual meeting after the next local election in May 2026. She announced that the cabinet would remain unchanged for the time being, but this is understood to be a temporary measure.

The meeting minutes confirm that council assembly elected Councillor Sarah King as leader of the council. The specific details of how the vote was conducted and the margin of victory are not provided in the meeting information.

The election took place during a Council Assembly meeting. The agenda for the meeting and public reports pack are available online.

The minutes of the meeting confirm that Councillor King's election was the first item of formal business.