# United Kingdom CPI item — Annual Booster Injection ()

United Kingdom CPI item — Annual Booster Injection () was up 0.7% year on year in September 2026, compared with 0.5% in August 2026.
The level stood at 104.6 (index (Jan=100, annually chain-linked)).
Over the past available history it has ranged from 0.1% (Jul 2026) to 0.8% (Apr 2026), averaging 0.4%.

- Source agency: UK Office for National Statistics (CPI item / consumption-segment indices)
- Makrognosis code: `UK.CPI.M.NSA.ITEM-430621`
- Frequency: monthly
- Units: index (Jan=100, annually chain-linked)
- Coverage: 2025-02-01 to 2026-09-01 (20 observations)
- Page: https://makrognosis.robomacro.com/data/united-kingdom/cpi-item-annual-booster-injection

## Recent data

| Period | Value | Y/Y % |
|---|---:|---:|
| September 2026 | 104.6 | 0.7 |
| August 2026 | 104.2 | 0.5 |
| July 2026 | 103.8 | 0.1 |
| June 2026 | 103.4 | 0.4 |
| May 2026 | 102.5 | 0.2 |
| April 2026 | 101.9 | 0.8 |
| March 2026 | 101.1 | 0.7 |
| February 2026 | 100.5 | 0.1 |
| January 2026 | 99.99 | — |
| December 2025 | 104.6 | — |
| November 2025 | 104.3 | — |
| October 2025 | 104.0 | — |
| September 2025 | 103.9 | — |
| August 2025 | 103.7 | — |
| July 2025 | 103.7 | — |
| June 2025 | 103.0 | — |
| May 2025 | 102.3 | — |
| April 2025 | 101.1 | — |
| March 2025 | 100.5 | — |
| February 2025 | 100.4 | — |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/UK.CPI.M.NSA.ITEM-430621"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/UK.CPI.M.NSA.ITEM-430621",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```