Inflation Record£100 in 1991 → Today (United Kingdom)
Official data verified · CPI (ONS) · Annual average · Not seasonally adjusted · Data through September 2026 (fetched 2026-11-02) · CPI All items (D7BT), MM23 dataset
£236.47
+136.5% cumulative inflation · 1991–2026
Your £100 in 1991 would have the purchasing power of £236.47 in United Kingdom today.
What this means
- Purchasing power: £100 in 1991 had the same average buying power as £236.47 in 2026.
- Price level change: the overall consumer price level rose by 136.5% across this 35-year span; the purchasing power of a pound changed by -57.7%.
- This measures the broad basket of consumer goods and services (CPI (ONS)). Individual expenses moved at different rates.
What this means in other amounts
| In 1991 | Worth in 2026 |
|---|---|
| £1 | £2.36 |
| £5 | £11.82 |
| £10 | £23.65 |
| £20 | £47.29 |
| £50 | £118.24 |
| £100 | £236.47 |
| £500 | £1,182.37 |
| £1,000 | £2,364.74 |
| £10,000 | £23,647.38 |
| £100,000 | £236,473.80 |
Key facts about 1991
- Consumer prices rose 7.5% in 1991 — the 2nd-largest annual increase in the 1988–2026 record.
- Measured by the older RPI instead of CPI, £100 in 1991 would equal £310.84 in 2026 — the two indexes have drifted apart, which is why this site never blends them.
- In the decade after 1991, prices rose 22.5% in total.
£100 in 1991, decade by decade
| Year | Worth | Cumulative price change |
|---|---|---|
| 2001 | £122.53 | +22.5% |
| 2011 | £155.56 | +55.6% |
| 2021 | £185.75 | +85.7% |
| 2026 | £236.47 | +136.5% |
Monthly CPI in 1991
| Period | Index | Change vs same period, prior year |
|---|---|---|
| January | 57.4 | 7.1% |
| February | 57.7 | 6.9% |
| March | 57.9 | 6.8% |
| April | 59.9 | 8.5% |
| May | 60.3 | 8.3% |
| June | 60.6 | 8.4% |
| July | 60.5 | 8.4% |
| August | 60.9 | 8.0% |
| September | 61.1 | 7.2% |
| October | 61.3 | 6.8% |
| November | 61.5 | 7.0% |
| December | 61.6 | 7.1% |
Annual average for 1991: 60.058
Verify this calculation
Series: CPI All items (D7BT), MM23 dataset; base 2015=100; not seasonally adjusted.
Index (1991 annual average): 60.058 · Index (2026 annual average): 142.022 · Ratio: 2.3647
Formula: amount × (indexend / indexstart). Formula v1.0 — annual-average CPI, NSA (per-country basis on each methodology page). Source: Office for National Statistics.