Statement Of Cash Flows [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Adjustments for finance income (cost) |
90,500,000
GBP
|
67,900,000
GBP
|
| Increase (decrease) in working capital |
28,400,000
GBP
|
54,500,000
GBP
|
| Adjustments for amortisation expense |
135,600,000
GBP
|
128,400,000
GBP
|
| Adjustments for depreciation expense |
207,200,000
GBP
|
189,500,000
GBP
|
| Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates |
–
GBP
|
900,000
GBP
|
| Income taxes paid, classified as operating activities |
188,600,000
GBP
|
173,600,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Proceeds from exercise of options |
46,800,000
GBP
|
36,800,000
GBP
|
| Proceeds from issue of ordinary shares |
5,900,000
GBP
|
5,300,000
GBP
|