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) |
14,100,000
GBP
|
9,200,000
GBP
|
| Cash flows from (used in) operations before changes in working capital |
133,300,000
GBP
|
195,700,000
GBP
|
| Adjustments for decrease (increase) in trade and other receivables |
4,000,000
GBP
|
26,500,000
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
13,300,000
GBP
|
7,000,000
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
200,000
GBP
|
85,900,000
GBP
|
| Adjustments for amortisation expense |
3,300,000
GBP
|
4,700,000
GBP
|
| Adjustments for gain (loss) on disposals, property, plant and equipment |
1,600,000
GBP
|
300,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Proceeds from sales of investments accounted for using equity method |
–
GBP
|
400,000
GBP
|
| Purchase of investments other than investments accounted for using equity method |
5,600,000
GBP
|
–
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
34,200,000
GBP
|
31,600,000
GBP
|
| Dividends paid to non-controlling interests, classified as financing activities |
8,100,000
GBP
|
7,900,000
GBP
|
| Proceeds from exercise of options |
600,000
GBP
|
500,000
GBP
|