November BoE interest rate hike: UK CPI poised to accelerate, setting the stage

• 3.4% YoY is the forecast for September UK CPI. That would mark an acceleration from August’s 3.1% and the highest reading since December last year.
• As elevated energy costs feed into the wider economy, core inflation is also expected to pick up.
• For the BoE, the data could supply the decisive case for monetary tightening at its November meeting.

06:00 GMT on Wednesday is the expected release time for September’s Consumer Price Index (CPI). The United Kingdom (UK) Office for National Statistics (ONS) is due to publish the figures alongside the Producer Price Index (PPI) and Retail Sales report.

Investors are expected to scrutinise the consumer inflation data for clues to the Bank of England’s (BoE) next monetary policy decision. Governor Andrew Bailey and other BoE officials have signalled that interest rates need to rise to contain inflation, but have offered little clarity on when they will act. A UK inflation reading in line with market forecasts could reinforce expectations of a November rate increase, boosting speculative demand for the British Pound (GBP).

3.4% UK CPI Forecast Puts September Inflation in Focus

A 0.3% monthly rise in consumer prices is the consensus forecast for September, compared with August’s 0.5% increase. On a year-on-year basis, however, inflation is expected to climb from the previous month’s 3.1% to 3.4%.

Excluding volatile energy, food, alcohol and tobacco prices, core inflation is forecast to accelerate at a more measured pace. The projected rise in September’s Core CPI to 2.8%, from 2.6% in August, would provide further evidence that the energy shock caused by the Middle East conflict is filtering through the wider economy.

Since July, crude prices have gained nearly 50%, including an increase of more than 10% so far in October. At the time of writing, Brent Oil is trading above $108.00 a barrel, its highest level in five months. With regional powers becoming increasingly entangled in the conflict, a return to pre-war prices appears unlikely in the near term. This points to sustained inflationary pressure and a risk that central banks could fall behind the curve unless they respond swiftly.

The Bank of England remains among the few major central banks that have yet to tighten monetary policy in 2026. Calls for a rate increase have come from some BoE officials. At last week’s International Monetary Fund (IMF) summit in Bangkok, Governor Bailey voiced frustration over inflation remaining above target. His comments strengthened investors’ confidence that some tightening would come before year-end.

UK economic releases have recently reinforced that assessment. Tuesday’s ILO Unemployment Rate indicated that the labour market remained resilient, even as vacancies fell and claimant numbers rose more than expected. Last week’s monthly Gross Domestic Product (GDP) report also surprised positively: output unexpectedly expanded in August, supported by a strong industrial sector. Together, these developments create favourable conditions for a quarter-point rate increase at next month’s meeting.

GBP/USD: UK CPI Sets the Next Test for Sterling

Among major currencies, the British Pound ranks as one of this week’s strongest performers. Encouraging UK releases have bolstered confidence in the economic outlook. They have also reduced concerns over the cost of tax-relief measures pledged by Prime Minister Andy Burnham’s cabinet. 

In their assessment of the recent economic releases, Commerzbank analysts say the data “gives the Bank of England room to raise rates without running the risk of putting additional pressure on an already weakening economy (...) Also takes some pressure off the Chancellor, who remains committed to reducing the budget deficit.”

In a note, Commerzbank says: “How this can be achieved while at the same time providing relief to households and businesses facing high energy costs should become clearer when the budget is presented at the end of the month,”

With those concerns having receded for now, robust UK figures and growing expectations that the BoE will finally raise rates in November continue to drive the Pound this week. The US Dollar, by contrast, remains weak as investors scale back wagers on consecutive Federal Reserve (Fed) rate increases. The Euro is also under pressure as protests in Paris turn violent, prompting the government to introduce curfews across several cities.

An immediate uptrend is evident on the GBP/USD 4-hour chart. The successful breach of the descending resistance line drawn from the late August highs, followed by Monday’s retest, confirms that bullish direction. Momentum readings offer support, with the Relative Strength Index (14) holding above 60. However, the Moving Average Convergence Divergence (MACD) is almost flat around zero, suggesting the advance remains fragile.

Resistance between Friday’s 1.3370 high and the 22 September high near 1.3400 is likely to test bullish conviction. A confirmed move above that band would shift attention to 1.3467, the 61.8% Fibonacci retracement of the August-October decline. The former support zone just above 1.3470, marked by the 2 and 4 September lows, would also come into focus.

For now, sellers are being held back around 1.3295, where the previously mentioned trendline meets the former range ceiling. A retreat below this confluence would leave the year-to-date lows near 1.3140 exposed.