Pound holds firm but gilts wobble as the City contemplates a Burnham premiership
Sterling shrugged off the Prime Minister's resignation in late trading, but the long end of the gilt curve told a different story as fund managers reached for their Burnham contingency files.
The pound held its ground in late London trading after Sir Keir Starmer's resignation as Prime Minister, gaining a few basis points against the dollar in thin liquidity before settling roughly flat on the day. The gilt market told a less reassuring story: yields on the thirty-year sold off by close to six basis points in the final hour, a small move in absolute terms but a meaningful one in a market that has spent the past quarter convinced the political risk premium on British debt was finally compressing.
The City had not been blind to the danger. Briefing notes circulated by half the major investment banks last week contained variations on what one chief economist privately called the "Burnham File" — contingency planning for a scenario in which the Greater Manchester mayor inherits Downing Street without a clear electoral mandate and is forced to renegotiate the framework of British economic policy in his first hundred days.
The long end of the gilt curve is where political uncertainty bites first, because thirty-year buyers are pricing not the current Chancellor's plans but the cumulative credibility of British fiscal policy over a generation. As the forecasters themselves have begun to concede, the precision implied by a quarter-point yield move belies the genuine uncertainty in the underlying call. A leadership contest that drags into late July, a new Prime Minister installed without a general election, and a fiscal event in the autumn delivered by an administration that has not faced the country are precisely the ingredients that long-duration investors price in by demanding more yield.
Equities held up better in the immediate reaction. The FTSE 100, dominated by exporters that benefit from a softer pound, was barely changed at the close. The FTSE 250 — a fairer proxy for domestic conditions — drifted lower by close to a percent, with housebuilders, retailers and regional banks bearing the brunt of the move.
Sterling's calm in the face of political turbulence is, in part, a vote of confidence in the institutional independence of the Bank of England. It is also, more pragmatically, a recognition that the Greater Manchester mayor is not a particularly radical economic actor by historical standards. His record at the head of the city-region has been technocratic and pro-business, his disagreements with the outgoing Chancellor more about distribution than overall fiscal envelope.
The risk markets are pricing is not a wild swing of policy. It is a vacuum. For perhaps eight weeks, the United Kingdom will be governed by a Prime Minister who has announced his resignation, advised by a Chancellor whose authority is by definition diminished, with the next fiscal statement uncertain and the political mandate to take difficult decisions on tax and spend correspondingly weaker.
Three signals will dominate the first fortnight of trading. The first is whether the gilt move extends into the new week or proves to have been a thin-market overreaction. The second is whether the Bank of England's monetary policy committee, due to communicate next month, signals any concern about fiscal credibility. The third — and the one no chart will reveal until much later — is whether the leadership contest produces a coronation or a fight.
A clean handover to Mr Burnham, with the Cabinet visibly rallied behind him, will allow markets to mark down political risk quickly. A divisive contest that exposes the fractures within the Parliamentary Labour Party will keep the risk premium elevated and could, in the worst case, force the Bank into a more hawkish posture than its inflation read alone would suggest.
For now, the City's verdict is restrained: a Labour government in transition is preferable to the Conservative chaos of the early decade, and a competent regional politician is preferable to a fragmented Westminster. That verdict survives precisely as long as the leadership contest does.