Inflation Record£100 in 2003 → 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
£188.05
+88.0% cumulative inflation · 2003–2026
Your £100 in 2003 would have the purchasing power of £188.05 in United Kingdom today.
What this means
- Purchasing power: £100 in 2003 had the same average buying power as £188.05 in 2026.
- Price level change: the overall consumer price level rose by 88.0% across this 23-year span; the purchasing power of a pound changed by -46.8%.
- 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 2003 | Worth in 2026 |
|---|---|
| £1 | £1.88 |
| £5 | £9.40 |
| £10 | £18.80 |
| £20 | £37.61 |
| £50 | £94.02 |
| £100 | £188.05 |
| £500 | £940.23 |
| £1,000 | £1,880.47 |
| £10,000 | £18,804.66 |
| £100,000 | £188,046.64 |
Key facts about 2003
- Consumer prices rose 1.4% in 2003 — the 30th-largest annual increase in the 1988–2026 record.
- Measured by the older RPI instead of CPI, £100 in 2003 would equal £228.88 in 2026 — the two indexes have drifted apart, which is why this site never blends them.
- In the decade after 2003, prices rose 30.4% in total.
£100 in 2003, decade by decade
| Year | Worth | Cumulative price change |
|---|---|---|
| 2013 | £130.43 | +30.4% |
| 2023 | £172.85 | +72.8% |
| 2026 | £188.05 | +88.0% |
Monthly CPI in 2003
| Period | Index | Change vs same period, prior year |
|---|---|---|
| January | 74.7 | 1.4% |
| February | 75.0 | 1.6% |
| March | 75.3 | 1.6% |
| April | 75.5 | 1.5% |
| May | 75.5 | 1.2% |
| June | 75.4 | 1.1% |
| July | 75.3 | 1.2% |
| August | 75.6 | 1.3% |
| September | 75.9 | 1.5% |
| October | 76.0 | 1.5% |
| November | 75.9 | 1.3% |
| December | 76.2 | 1.3% |
Annual average for 2003: 75.525
Verify this calculation
Series: CPI All items (D7BT), MM23 dataset; base 2015=100; not seasonally adjusted.
Index (2003 annual average): 75.525 · Index (2026 annual average): 142.022 · Ratio: 1.8805
Formula: amount × (indexend / indexstart). Formula v1.0 — annual-average CPI, NSA (per-country basis on each methodology page). Source: Office for National Statistics.