Whoever leads the ruling party, which has a big majority in Britain's parliament, will by default become prime minister. LONDON: Wes Streeting, who resigned as UK health secretary this week , announced Saturday (May 16) he will run to replace Keir Starmer as Labour leader and prime minister, after the party suffered disastrous local election results. Streeting quit the government Thursday with a withering assessment of Starmer's leadership, but no other senior minister followed suit and the 43-