Andy Burnham odds-on favourite to replace Starmer as Prime Minister

Keir Starmer's resignation as Prime Minister has triggered a dramatic overhaul of political betting markets. Andy Burnham is emerging as the clear frontrunner to take over the country's top job. The announcement follows weeks of speculation over Starmer's future. The door is now open for a Labour leadership contest that could determine Britain's next Prime Minister within weeks.

Bookmakers reacted almost immediately to the news. They’ve slashed Burnham's odds as support behind the former Greater Manchester mayor continues to build. Several senior Labour figures have already lined up behind him, further strengthening his position ahead of any formal contest.

Burnham dominates the betting

According to reported odds from leading UK bookmakers,  Burnham has become the overwhelming favourite to replace Starmer.

The odds suggest bookmakers believe Burnham's path to Number 10 is becoming increasingly clear, particularly after former leadership rival Wes Streeting publicly backed his candidacy.

Labour leadership race takes shape

While Labour's formal leadership process is yet to begin, the signs point towards a swift transition. Reports indicate nominations for a successor will open in July. The party is keen to avoid a prolonged internal battle at a time when it faces increasing pressure from opposition parties.

Burnham returned to Westminster after winning the Makerfield by-election. He is widely expected to secure enough nominations from Labour MPs to enter the race. Some reports suggest he may already have support from well over the threshold required to stand.

Miliband, Rayner and Streeting remain outsiders

Although Burnham dominates the market, bookmakers continue to price several senior Labour figures as potential alternatives.

Some operators have mentioned Ed Miliband as a possible compromise candidate if the race becomes more competitive than expected. Angela Rayner and Wes Streeting also remain in the betting. Both sit a considerable distance behind Burnham, though, according to current odds.

For now, however, betting markets appear united in their assessment that Burnham is the candidate to beat.

What happens next?

Starmer has announced his intention to step down once Labour chooses a successor. This means he will remain in place during the transition period. Under UK constitutional conventions, the governing party selects a new leader before the outgoing Prime Minister formally tenders their resignation to the King.

With bookmakers, party insiders and several senior Labour figures now rallying behind Burnham, attention will shift to whether a full leadership contest materialises or whether Labour opts for a largely uncontested handover. Either way, political betting markets are already signalling who they believe is most likely to walk through the door of Number 10 next.