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) |
3,300,000
GBP
|
7,400,000
GBP
|
| Adjustments for decrease (increase) in trade and other receivables |
107,700,000
GBP
|
317,200,000
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
160,200,000
GBP
|
263,400,000
GBP
|
| Adjustments for amortisation expense |
18,900,000
GBP
|
18,900,000
GBP
|
| Adjustments for gain (loss) on disposals, property, plant and equipment |
200,000
GBP
|
500,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
77,300,000
GBP
|
80,500,000
GBP
|