Jamie Dimon has warned the new UK chancellor John Healey that good policies causing growth are needed, while praising outgoing finance minister Rachel Reeves for her commitment to medium-term fiscal prudence that helped keep a lid on government bond yields. Dimon declined to say whether a higher bank levy would lead him to cancel plans for a new £3 billion UK headquarters in London, stating he would not make a binary decision. Nigel Green of deVere Group cautioned that Healey's appointment, with his spending record and mandate to execute Prime Minister Andy Burnham's plans, represents a materially different risk picture and makes wealth taxes, exit charges, and higher capital gains tax more likely. Other industry figures stressed the importance of regulatory stability and continuity, with Jonathan Herbst of Norton Rose Fulbright noting that firms want existing reforms delivered predictably, while Derek Ryan of Bibby Financial Services highlighted the need for business rate reform and lower national insurance contributions to support SME investment.