UK borrowing costs rise as City traders brace for Burnham, and pound heads for worst week since 2024 – business live The GuardianAndy Burnham has path to challenge PM but must win byelection first The GuardianUK borrowing costs rise and pound falls as leadership drama continues BBCAndy Burnham is gambling it all for shot at being prime minister The TimesGilts and Sterling Slide on Prospect of Burnham Challenge to the PM Bloomberg.com