# United Kingdom RPI All Items Index Excl Mortgage Interest (RPIX): Jan 1987=100 ()

United Kingdom RPI All Items Index Excl Mortgage Interest (RPIX): Jan 1987=100 () was up 3.9% year on year in September 2026, compared with 3.3% in August 2026.
The level stood at 415.1 (index (1987=100)).
Over the past ten years it has ranged from 0.8% (Aug 2020) to 13.9% (Oct 2022), averaging 4.5%.

- Source agency: UK Office for National Statistics
- Makrognosis code: `UK.RPIX.M.NSA.ITEM-CHMK`
- Frequency: monthly
- Units: index (1987=100)
- Coverage: 1987-01-01 to 2026-09-01 (477 observations)
- Page: https://makrognosis.robomacro.com/data/united-kingdom/rpi-all-items-index-excl-mortgage-interest-rpix-jan-1987-100

## Recent data

| Period | Value | Y/Y % |
|---|---:|---:|
| September 2026 | 415.1 | 3.9 |
| August 2026 | 414.6 | 3.3 |
| July 2026 | 412.2 | 3.1 |
| June 2026 | 409.7 | 2.9 |
| May 2026 | 408.6 | 3.0 |
| April 2026 | 407.6 | 3.0 |
| March 2026 | 404.5 | 4.0 |
| February 2026 | 401.4 | 3.5 |
| January 2026 | 399.7 | 3.7 |
| December 2025 | 401.9 | 4.1 |
| November 2025 | 399.0 | 3.7 |
| October 2025 | 400.9 | 4.2 |
| September 2025 | 399.6 | 4.4 |
| August 2025 | 401.4 | 4.4 |
| July 2025 | 399.8 | 4.7 |
| June 2025 | 398.2 | 4.3 |
| May 2025 | 396.6 | 4.1 |
| April 2025 | 395.9 | 4.2 |
| March 2025 | 388.8 | 2.8 |
| February 2025 | 387.7 | 3.0 |
| January 2025 | 385.5 | 3.2 |
| December 2024 | 386.0 | 2.9 |
| November 2024 | 384.8 | 3.0 |
| October 2024 | 384.8 | 2.8 |

## API

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

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