Inflation Record£100 in 2018 → 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
£134.09
+34.1% cumulative inflation · 2018–2026
Your £100 in 2018 would have the purchasing power of £134.09 in United Kingdom today.
What this means
- Purchasing power: £100 in 2018 had the same average buying power as £134.09 in 2026.
- Price level change: the overall consumer price level rose by 34.1% across this 8-year span; the purchasing power of a pound changed by -25.4%.
- 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 2018 | Worth in 2026 |
|---|---|
| £1 | £1.34 |
| £5 | £6.70 |
| £10 | £13.41 |
| £20 | £26.82 |
| £50 | £67.04 |
| £100 | £134.09 |
| £500 | £670.44 |
| £1,000 | £1,340.89 |
| £10,000 | £13,408.86 |
| £100,000 | £134,088.64 |
Key facts about 2018
- Consumer prices rose 2.5% in 2018 — the 19th-largest annual increase in the 1988–2026 record.
- Measured by the older RPI instead of CPI, £100 in 2018 would equal £147.38 in 2026 — the two indexes have drifted apart, which is why this site never blends them.
- Since 2018, the overall price level has multiplied about 1.3× — £1.00 in 2018 buys what £1.34 buys in 2026.
£100 in 2018, decade by decade
| Year | Worth | Cumulative price change |
|---|---|---|
| 2026 | £134.09 | +34.1% |
Monthly CPI in 2018
| Period | Index | Change vs same period, prior year |
|---|---|---|
| January | 104.4 | 3.0% |
| February | 104.9 | 2.7% |
| March | 105.0 | 2.4% |
| April | 105.4 | 2.4% |
| May | 105.8 | 2.4% |
| June | 105.8 | 2.4% |
| July | 105.8 | 2.5% |
| August | 106.5 | 2.6% |
| September | 106.6 | 2.4% |
| October | 106.7 | 2.4% |
| November | 107.0 | 2.3% |
| December | 107.1 | 2.1% |
Annual average for 2018: 105.917
Verify this calculation
Series: CPI All items (D7BT), MM23 dataset; base 2015=100; not seasonally adjusted.
Index (2018 annual average): 105.917 · Index (2026 annual average): 142.022 · Ratio: 1.3409
Formula: amount × (indexend / indexstart). Formula v1.0 — annual-average CPI, NSA (per-country basis on each methodology page). Source: Office for National Statistics.