Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations |
123,200,000
GBP
|
— |
328,600,000
GBP
|
— | — |
| Interest paid, classified as operating activities |
33,400,000
GBP
|
— |
34 .4
GBP
|
— | — |
| Cash flows from (used in) operating activities |
89,800,000
GBP
|
— |
294 .2
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities |
–
GBP
|
— |
–
GBP
|
— | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
–
GBP
|
— |
–
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities |
100,000
GBP
|
— |
300,000
GBP
|
— | — |
| Cash flows from (used in) investing activities |
100,000
GBP
|
— |
300,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from borrowings, classified as financing activities |
339,700,000
GBP
|
— |
618,600,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities |
288,800,000
GBP
|
— |
699,900,000
GBP
|
— | — |
| Dividends paid, classified as financing activities |
56,500,000
GBP
|
— |
56. 7
GBP
|
— | — |
| Cash flows from (used in) financing activities |
99. 7
GBP
|
— |
310,900,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
10,000,000
GBP
|
— |
17 .0
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents |
4 .9
GBP
|
— |
3,300,000
GBP
|
— | — |
| Cash and cash equivalents | — |
189,400,000
GBP
|
— |
204,300,000
GBP
|
218,000,000
GBP
|