# United Kingdom AGG 21: Implied Deflator Index: All retailing including automotive fuel ()

United Kingdom AGG 21: Implied Deflator Index: All retailing including automotive fuel () was up 4.6% year on year in September 2026, compared with 3.6% in August 2026.
The level stood at 106.1 (index).
Over the past ten years it has ranged from −2.1% (Nov 2020) to 13.1% (Jul 2022), averaging 3.0%.

- Source agency: UK Office for National Statistics
- Makrognosis code: `UK.RSIDEF.M.NSA.ITEM-N3DK`
- Frequency: monthly
- Units: index
- Coverage: 1988-01-01 to 2026-09-01 (465 observations)
- Page: https://makrognosis.robomacro.com/data/united-kingdom/agg-21-implied-deflator-index-all-retailing-including-automotive-fuel

## Recent data

| Period | Value | Y/Y % |
|---|---:|---:|
| September 2026 | 106.1 | 4.6 |
| August 2026 | 104.8 | 3.6 |
| July 2026 | 103.5 | 2.8 |
| June 2026 | 104.1 | 3.2 |
| May 2026 | 104.8 | 4.0 |
| April 2026 | 105.1 | 4.7 |
| March 2026 | 103.8 | 2.8 |
| February 2026 | 101.9 | 1.0 |
| January 2026 | 101.3 | 0.9 |
| December 2025 | 102.3 | 1.8 |
| November 2025 | 101.8 | 1.7 |
| October 2025 | 102.0 | 2.1 |
| September 2025 | 101.4 | 1.8 |
| August 2025 | 101.2 | 1.5 |
| July 2025 | 100.7 | 1.2 |
| June 2025 | 100.9 | 1.0 |
| May 2025 | 100.8 | 0.4 |
| April 2025 | 100.4 | 0.0 |
| March 2025 | 101.0 | 0.6 |
| February 2025 | 100.9 | 1.0 |
| January 2025 | 100.4 | 1.2 |
| December 2024 | 100.5 | 0.2 |
| November 2024 | 100.1 | −0.3 |
| October 2024 | 99.90 | −1.1 |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/UK.RSIDEF.M.NSA.ITEM-N3DK"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/UK.RSIDEF.M.NSA.ITEM-N3DK",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```