Healey has served as a member of Parliament since 1997 and was defence secretary under Keir Starmer. Healey may play "bad cop" by delivering tougher fiscal messages, leaving Burnham to take a more publicly supportive position. Markets will focus on whether Healey can preserve fiscal discipline while funding defence priorities and delivering Burnham's domestic commitments. Related articlesGood cop, bad cop? What a Burnham-Healey duo might mean for the marketsUS-Iran talks continue as Trump warns forces are readyTrump faces Apple-Micron clash over Chinese memory chips - WSJ