Embattled UK Prime Minister Keir Starmer on Tuesday survived a bid by opposition politicians to subject him to a parliamentary probe over his controversial appointment of Peter Mandelson as envoy to the US.

Members of parliament voted against referring Starmer to a committee to consider if he misled parliament over giving Mandelson, an ex-associate of late US sex offender Jeffrey Epstein, the plum diplomatic post.

It was the latest development in an unrelenting scandal that has plagued Starmer’s...