India, June 22 -- An emotional Keir Starmer announced his resignation as British Prime Minister and Labour leader on Monday, drawing the curtains on a turbulent tenure and triggering a race for the country's top job.

As attention turns to who could inherit 10 Downing Street, several names have emerged as frontrunners --from the popular Andy Burnham, buoyed by his recent by-election victory, to effective communicator Wes Streeting, former Labour leader Ed Miliband, soft-left favourite Angela Rayner, Tony Blair-backed Home Secretary Shabana Mahmood and former Marine Al Carns, who has emerged as the contest's dark horse.

The 63-year-old said he would remain in office until the Labour Party elects a new leader and prime minister, while pled...