Inflation Record£100 in 2005 → 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
£181.85
+81.8% cumulative inflation · 2005–2026
Your £100 in 2005 would have the purchasing power of £181.85 in United Kingdom today.
What this means
- Purchasing power: £100 in 2005 had the same average buying power as £181.85 in 2026.
- Price level change: the overall consumer price level rose by 81.8% across this 21-year span; the purchasing power of a pound changed by -45.0%.
- 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 2005 | Worth in 2026 |
|---|---|
| £1 | £1.82 |
| £5 | £9.09 |
| £10 | £18.18 |
| £20 | £36.37 |
| £50 | £90.92 |
| £100 | £181.85 |
| £500 | £909.23 |
| £1,000 | £1,818.47 |
| £10,000 | £18,184.66 |
| £100,000 | £181,846.64 |
Key facts about 2005
- Consumer prices rose 2.0% in 2005 — the 24th-largest annual increase in the 1988–2026 record.
- Measured by the older RPI instead of CPI, £100 in 2005 would equal £216.17 in 2026 — the two indexes have drifted apart, which is why this site never blends them.
- In the decade after 2005, prices rose 28.1% in total.
£100 in 2005, decade by decade
| Year | Worth | Cumulative price change |
|---|---|---|
| 2015 | £128.05 | +28.1% |
| 2025 | £177.17 | +77.2% |
| 2026 | £181.85 | +81.8% |
Monthly CPI in 2005
| Period | Index | Change vs same period, prior year |
|---|---|---|
| January | 77.0 | 1.6% |
| February | 77.2 | 1.6% |
| March | 77.5 | 1.8% |
| April | 77.8 | 1.8% |
| May | 78.1 | 2.0% |
| June | 78.1 | 2.0% |
| July | 78.2 | 2.4% |
| August | 78.4 | 2.3% |
| September | 78.6 | 2.5% |
| October | 78.7 | 2.3% |
| November | 78.7 | 2.2% |
| December | 78.9 | 1.9% |
Annual average for 2005: 78.100
Verify this calculation
Series: CPI All items (D7BT), MM23 dataset; base 2015=100; not seasonally adjusted.
Index (2005 annual average): 78.100 · Index (2026 annual average): 142.022 · Ratio: 1.8185
Formula: amount × (indexend / indexstart). Formula v1.0 — annual-average CPI, NSA (per-country basis on each methodology page). Source: Office for National Statistics.