Sterling Effective Exchange Rate Index Hits Post-Brexit High as BOE Rate Hike Expectations Heat Up
nashnova research
The pound's effective exchange rate has climbed to its highest since the 2016 Brexit vote, with markets pricing in the BOE's first rate hike in three years this week — but economists widely expect a slower tightening pace than swaps imply.
How strong is this sterling rally?
The BOE's sterling effective exchange rate index — measuring the pound against a basket of trading-partner currencies — broke above its May 2025 peak this week, hitting a post-Brexit-referendum high.
Cable rose for a seventh straight session to $1.3487, touching $1.3503 intraday — the highest since September 15.
This means → the pound's post-Brexit exchange-rate recovery has entered a new phase, moving beyond a rebound into fresh multi-year highs.
What is driving the pound higher?
Economic fundamentals: October data showed UK private-sector expansion at its fastest in eight months, ending a two-year run of falling employment.
Fading political risk: Chancellor John Healey's budget delivered no major fiscal surprises and drew a positive investor reception.
Dollar weakness: the greenback fell to a one-month-plus low after the Democrats swept the US midterm elections, giving sterling an extra tailwind.
In plain terms = the UK economy is stabilising, politics delivered no shocks, and the dollar is weakening — all three forces are pushing the pound up at once.
What is the market betting on?
Swap pricing shows the BOE will announce a 25-basis-point hike this week — its first in three years.
The swaps curve also implies at least two more hikes over the next twelve months.
Ebury head of market strategy Matthew Ryan expects a 7-to-2 vote in favour, with dissents from Swati Dhingra and Alan Taylor; a 6-to-3 split would pose downside tail risk for sterling.
Why hike now — where is the inflation coming from?
The core driver is the energy-price shock from the US–Iran conflict: UK household energy bills are expected to rise at least 25% in January, with a possible further increase in April; food prices are also being affected.
The BOE projects consumer-price inflation will approach 5%; Bloomberg Economics forecasts a peak of 4.6%, while Pantheon Macroeconomics chief UK economist Rob Wood sees it reaching as high as 4.9%.
This means → this inflation wave would be the worst since the 2022–23 Ukraine-war energy shock, forcing the central bank to tighten again.
Why are economists more cautious than the market?
BNP Paribas expects the committee to "gently push back on market pricing," with the second hike landing in February next year.
Barclays expects the BOE to flag rising inflation risks but to decide on a "meeting-by-meeting" basis — no upfront commitment to a hiking path.
PIMCO economist Peder Beck-Friis forecasts only one more hike next year, followed by a prolonged hold.
In plain terms = the market is betting on back-to-back hikes; economists are saying "one step at a time" — and the recent drop in oil prices could ease the pressure to tighten further.
What comes next?
The BOE's forward-guidance language on Thursday is the key variable: it will determine whether the gap between market and economist rate-hike expectations narrows.
This reflects a deeper point — the real suspense is not "will they hike this week" (already fully priced) but what signal the BOE sends about the path ahead.
The subsequent direction for sterling and gilts hinges on whether that guidance leans hawkish or dovish.
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