Property, Plant and Equipment (Details) - GBP (£) £ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
|
| Disclosure Of Property Plant And Equipment Text Block [Abstract] | ||
| Acquired property, plant and equipment cost | £ 80.7 | £ 51.0 |
| Recognised property, plant and equipment on acquisition | 7.3 | 56.1 |
| Sale and leaseback transaction | 13.5 | |
| Statement of profit or loss within administrative expenses | £ 1.9 | |