New Delhi, June 21 -- Andy Burnham is a political insider turned outsider who aims to be Britain's next prime minister.

The 56-year-old politician presents himself as an amiable northern everyman who prefers T-shirts to a suit and tie and spends spare time playing soccer or spinning 1990s tunes during DJ battles.

He's also an experienced politician whose career has taken him from high-level government jobs to the mayoralty of Greater Manchester, and now to the cusp of the prime minister's office.

Burnham is expected to challenge Prime Minister Keir Starmer after winning a seat in Parliament in a special election he hailed as a "turning point" for U.K. politics.

His nickname is inspired by 'Game of Thrones'

Burnham was born and raised...