One in seven Labour MPs represents constituencies in the capital. The prime minister is a London member of parliament, as is his deputy, David Lammy, as well as the man who wants Starmer’s job, Health Secretary Wes Streeting. The Secretary State for Housing, Steve Reed, completes the quartet of powerful London MPs in the Cabinet. A significant percentage of the party’s activists, and the members who choose the party’s leaders, live in the capital. Losses here will hurt Labour’s core.