Sterling Borrowed Its Rally. The Repayments Have Started.

The Bank of England held Bank Rate at 3.75% last week, and Andrew Bailey went out of his way to make sure nobody misread it. "Please do not leave this room thinking that the Bank of England is edging towards a hike," he told reporters, "because frankly, there's nothing in what I said, and I think any of us have said, along those lines."

That sentence matters more than the vote, because sterling spent July carrying the market's most confidently priced rate rise: by mid-month a September hike from the Bank was fully in the curve, at a time when Fed and ECB moves were still coin flips. The oil shock pushed markets to price UK hikes, gilt yields rose faster than Bunds or Treasuries, and the widening gap did the rest: investors buy the bonds that pay them most, and for a month that meant buying Britain's. The pound reached a one-year high against the euro and climbed against the dollar and yen. We argued at the time that the rally was borrowed, built on a hike we did not expect the Bank to deliver. The Bank has now held again and told the market plainly which way it leans. The repayments have started: sterling has eased from its highs against the euro, and holds above 1.34 only against a dollar wrestling with a credibility question of its own.

Currencies run on relative interest rate expectations, and sterling's are dissolving at exactly the moment everyone else's are firming.

The ECB, which raised rates in June, is now priced at around 85 percent to hike again in September. The Fed, for reasons we set out this week, is priced at 57 percent. The Bank of England sits at roughly 40 percent, and in our view even that is overstated. So the hike that was fully in the curve a month ago is being priced back out, and the rate differentials and gilt spreads that pulled sterling higher through July are narrowing from both sides at once: the Bank standing still while Frankfurt and Washington are priced to move. Commerzbank's FX desk put it bluntly after the press conference: "anyone banking on monetary policy to support the pound is likely to be disappointed."

That is the whole mechanism of the unwind. Nothing about the UK needs to get worse for sterling to fall. The rest of the world just needs to deliver what it is priced for while the Bank delivers what it said.

The honest counterargument is on the committee. The vote was 6-3, with Catherine Mann joining Huw Pill and Megan Greene in preferring an immediate rise to 4%, and the hawkish minority has now grown by one vote at every meeting this year: 8-1 in April, 7-2 in June, 6-3 in July. That drift is real, Bailey himself allowed that a persistent conflict producing second-round effects would likely mean rates have to rise, and it is why the September meeting on the 17th is live rather than a formality.

But set the direction of the drift against what the Bank actually published alongside the hold. CPI inflation has fallen to 2.6 percent, and the new projection has it peaking at just 3.2 percent late this year. Then comes the detail that matters. The Bank's forecasts are always built on a what-if: they assume the rate path markets have priced, which currently builds in a strong likelihood of two hikes by late 2027, and show where inflation lands if that path is delivered. The answer this time is below target. Inflation undershoots to 1.7 percent in early 2028 and is still under 2 percent three years out. That is not the Bank predicting hikes. It is the Bank showing what the market's hikes would do, and its own model says they would do too much. A committee that targets 2 percent has no reason to deliver a path that lands beneath it, which is exactly why we do not expect these hikes, and why a premium built on them is unwinding. Bailey said the rest in person: the curve is a reasonable price of the risks, but the committee is "not talking about an insurance hike," the priced path reflects risk premia rather than anyone's central expectation, and he is seeing "broader slowing in domestic inflation."

Contrast the Fed, where we do expect the pressure to tell. America has a five-year inflation overshoot, a firm economy, and a bond market actively forcing the question. Britain has inflation at 2.6 percent, weak growth, a loosening labour market, and a policy rate that is already restrictive. One of these central banks has a reason to move. The other has a forecast that argues against it.

Here is the part that decides whether the pound merely gives back its summer or goes further, and it is the argument we have made since the Sterling Trap: the rally was never accompanied by any lasting improvement in the fundamentals beneath it.

ING made the same case this week in a note arguing sterling's rally was not built to last, and their fiscal reading matches ours. Spending pressure is building across defence, health and social care. Debt interest costs are high and rising, aggravated by Britain's unusually large stock of index-linked gilts and a growing dependence on foreign investors, hedge funds prominent among them, who are the least patient holders a bond market can have. The tax burden is the highest in decades, and spending has still risen faster as a share of the economy since 2019. None of that improved while the pound was rallying. The rally simply priced a hike on top of it, and the hike is not coming.

ING's conclusion is a forecast of 0.88 on EUR/GBP by the fourth quarter, which translates to sterling near 1.14 against the euro, a long way below where the pound spent July. That is one bank's number, not ours, but the direction matches the mechanism: differentials converging against a currency whose fundamentals never earned the level.

For a business selling pounds to buy euros, the window we flagged in July is doing exactly what we warned it might. The rally peaked above 1.17, the hike underneath it has been declined, and the ECB is priced to narrow the gap further in September. Anyone who covered requirements near the highs did the right thing. For requirements still open, the calculation has hardened: current levels remain well above where ING's path points, and the argument for waiting now requires the Bank to turn hawkish against its own forecast.

Against the dollar the picture is livelier still, because the other side of that pair has its own event risk: US payrolls land tomorrow, and as we set out this week, a hot print starts the dollar's repricing within hours. Sterling buyers of dollars face pressure from both directions at once, a home central bank standing still and an American one being forced forward.

The pound spent the summer carrying the market's most confidently priced hike. It enters the autumn carrying its least deliverable one. Markets price promises, and they have started marking this one back. If you have sterling exposure in the months ahead and want to talk through the options, please speak to the Lamera Capital dealing team.