Makrognosis

United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 ()

MonthlyNot seasonally adjustedCode UK.CPI.M.NSA.COICOP-09-5-1

Latest (y/y)1.4%September 2026
Previous (y/y)1.1%August 2026
Level147.9September 2026

United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 () was up 1.4% year on year in September 2026, compared with 1.1% in August 2026.

The level stood at 147.9 (index (2015=100)).

Over the past ten years it has ranged from −12.1% (Jan 2021) to 20.1% (Aug 2023), averaging 4.0%.

United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 (), annual % change, Jan 1989 – Sep 2026−20%−10%0%10%20%19901995200020052010201520202025Robomacro
United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 (), annual % change, Jan 1989 – Sep 2026. Source: UK Office for National Statistics.
United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 (), level (index (2015=100))25507510012515019901995200020052010201520202025Robomacro
United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 (), level (index (2015=100)).

Showing the full history (downsampled for display). Open the interactive chart to zoom and switch transforms.

Recent data

PeriodValueY/Y %
September 2026147.91.4
August 2026151.91.1
July 2026147.8−2.7
June 2026152.1−0.7
May 2026153.10.5
April 2026147.0−2.3
March 2026149.60.4
February 2026146.91.5
January 2026146.82.4
December 2025148.50.8
November 2025146.7−2.7
October 2025144.0−4.8
September 2025145.9−1.9
August 2025150.23.9
July 2025151.91.5
June 2025153.21.3
May 2025152.40.7
April 2025150.4−1.6
March 2025149.00.07
February 2025144.72.0
January 2025143.44.5
December 2024147.34.6
November 2024150.75.5
October 2024151.33.2

Last 24 observations. The full history (465 observations) is available through the API.

Get United Kingdom CPI INDEX 09.5.1 : BOOKS 2015=100 () in your code or spreadsheet

One guessable code, agency-direct, updated on release. Free tier available.

curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/UK.CPI.M.NSA.COICOP-09-5-1"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/UK.CPI.M.NSA.COICOP-09-5-1",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
Get a free API key → · API docs

About this series

Latest observationSeptember 2026
First observationJanuary 1988
Observations465
FrequencyMonthly
Unitsindex (2015=100)
AdjustmentNot seasonally adjusted
10-year high20.1% (Aug 2023)
10-year low−12.1% (Jan 2021)
10-year average4.0%
Source agencyUK Office for National Statistics
Makrognosis codeUK.CPI.M.NSA.COICOP-09-5-1

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Other United Kingdom indicators

United Kingdom GDP (Gross Domestic Product)United Kingdom Nominal GDP (current prices)United Kingdom Inflation Rate (CPI)United Kingdom Core Inflation RateUnited Kingdom Unemployment RateUnited Kingdom Credit Rating & Sovereign Risk ScoreUnited Kingdom Industrial ProductionUnited Kingdom Production Industries - Total (Index 1dp): CVM SAUnited Kingdom Retail SalesUnited Kingdom Producer Price Inflation (PPI)United Kingdom BoP Current Account Balance SAUnited Kingdom Trade Balance: Goods & ServicesUnited Kingdom Total Trade (TT): WW: Exports: BOP: CP: SA (goods + services)United Kingdom Total Trade: World: Exports: BOP: CVM SAUnited Kingdom Total Trade (TT): WW: Imports: BOP: CP: SA (goods + services)United Kingdom Total Trade: World: Imports: BOP: CVM SA

FAQ

What is the current cPI INDEX 09.5.1 : BOOKS 2015=100 () in United Kingdom?
The latest reading is 1.4% year on year for September 2026, published by UK Office for National Statistics.
Where does this data come from?
It is collected directly from UK Office for National Statistics and is available through the Makrognosis API under the code UK.CPI.M.NSA.COICOP-09-5-1.

Last updated 2026-10-22. Source: UK Office for National Statistics. Original title: “CPI INDEX 09.5.1 : BOOKS 2015=100 (UK)”.