Above-forecast UK inflation and higher public debt leave British Pound wavering

  • GBP/USD fluctuated near 1.3475. Tuesday’s attempt to clear one-month highs at 1.3400 had failed.
  • September’s above-forecast UK inflation reinforced the case for a BoE interest rate rise next month.
  • Higher UK government borrowing may have cancelled out the support for the Pound.


GBP/USD touched a session low of 1.3364. It then recovered towards 1.3375. The British Pound (GBP) fluctuated against the US Dollar (USD) on Wednesday as UK Consumer Price Index (CPI) data exceeded forecasts and government debt rose further. The pair continues to consolidate its gains of recent days, having failed to hold above 1.3400 on Tuesday.

TMGM Analysis: Financial Market News, Economic Calendar & Market Insights

September’s UK Consumer Price Index (CPI) increased 0.4%, National Statistics reported. That exceeded the 0.3% market forecast but was slightly below August’s 0.5% rise. Year-on-year (Y-o-Y) CPI growth picked up from 3.1% in August to 3.5%, surpassing the 3.4% consensus.

Excluding volatile food and energy prices, core CPI rose 2.8% Y-o-Y. This was above the 2.7% consensus and followed a 2.6% Y-o-Y increase in August.

September brings further rise in UK government borrowing

UK Public Sector Net Borrowing reached GBP 24.52 billion in September, up from GBP 17.25 billion in August, according to National Statistics figures published alongside the inflation release. The increase may have revived longstanding concerns over the UK’s high public debt, placing some downward pressure on the Pound.

An unexpected fall in the ILO Unemployment Rate on Tuesday, to its lowest in more than a year, preceded Wednesday’s releases. Together with last week’s strong Gross Domestic Product (GDP) figures, the data have reinforced market expectations that the Bank of England might raise interest rates at its November 5 meeting.

Following five days of selling, the Dollar Index (DXY) is recovering some ground, with the US Dollar modestly firmer on Wednesday. Markets have already priced in a pause at next week’s Federal Reserve (Fed) monetary policy meeting. Meanwhile, concerns over high oil prices, against a backdrop of uncertainty surrounding the Middle East conflict, continue to direct safe-haven flows towards the Greenback.

Economic Data Indicator

Year-on-Year Consumer Price Index (YoY)

Published monthly by the Office for National Statistics, the United Kingdom (UK) Consumer Price Index (CPI) tracks consumer price inflation to international standards. It measures how quickly the prices of goods and services purchased by households rise or fall and serves as the inflation gauge for the government’s target. The YoY figure compares prices in the reference month with those a year earlier. A high reading is generally considered positive for the Pound Sterling (GBP), whereas a low reading is considered negative.

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Latest release: Wed 21 Oct 2026 06:00

Release frequency: Every month

Actual reading: 3.5%

Consensus forecast: 3.4%

Prior reading: 3.1%

Data source: Office for National Statistics

Around 2% is the Bank of England’s target for headline Consumer Price Index (CPI) inflation. This mandate makes the monthly release important for traders. Rising inflation implies earlier, faster interest rate increases or reduced bond purchases by the BOE, constraining the supply of pounds. Slower price growth, by contrast, points to looser monetary policy. A reading above expectations generally supports GBP.

Economic Data Indicator

UK Public Sector Net Borrowing

New debt incurred by UK governments is measured by the Net Borrowing figure published by National Statistics, reflecting the financial deficit in the UK national accounts. A negative reading generally signals a surplus in the UK accounts, which should support GBP. Since a deficit is generally unfavourable for the economy, an increase in Net Borrowing is regarded as negative, or bearish, for GBP.

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Latest release: Wed 21 October 2026 06:00

Release frequency: Monthly

Reported figure: £24.52B

Consensus forecast: -

Prior reading: £18.268B

Data source:Office for National Statistics