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 |
1 86.9
GBP
|
— |
65,600,000
GBP
|
— | — |
| Dividends received, classified as operating activities |
—
GBP
|
— |
—
GBP
|
— | — |
| Interest paid, classified as operating activities |
9,300,000
GBP
|
— |
4,300,000
GBP
|
— | — |
| Interest received, classified as operating activities |
5,100,000
GBP
|
— |
11 . 7
GBP
|
— | — |
| Income taxes paid (refund), classified as operating activities |
9 7 .8
GBP
|
— |
7 1 .6
GBP
|
— | — |
| Cash flows from (used in) operating activities |
84,900,000
GBP
|
— |
1 2 9.8
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Proceeds from sales of property, plant and equipment, classified as investing activities |
4,800,000
GBP
|
— |
1. 0
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities |
32,300,000
GBP
|
— |
36,400,000
GBP
|
— | — |
| Cash flows from (used in) investing activities |
45,000,000
GBP
|
— |
42,900,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments to acquire or redeem entity's shares |
200,000
GBP
|
— |
1 .2
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities |
4,000,000
GBP
|
— |
3,000,000
GBP
|
— | — |
| Dividends paid, classified as financing activities |
1 9 1 .8
GBP
|
— |
2 55.4
GBP
|
— | — |
| Cash flows from (used in) financing activities |
20 1 .4
GBP
|
— |
268,800,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes |
1 6 1 .5
GBP
|
— |
44 1 .5
GBP
|
— | — |
| Cash and cash equivalents | — |
258,600,000
GBP
|
— |
4 20.1
GBP
|
86 1 .6
GBP
|