Gilt yields rose slightly on Friday as U.K Prime Minister Keir Starmer faces a challenge to his leadership from a Labour Party rival. Andy Burnham, the current Manchester mayor, is expected to contest a special election to parliament that, if he won, would give him the seat needed to challenge Starmer, whose premiership has been under pressure following a disastrous set of local election results last week. Burnham is seen by the bond market as leaning more to the left — a factor that has sent