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) operating activities |
152,600,000
GBP
|
— |
1 91 .6
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
52,200,000
GBP
|
— |
–
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities |
70,100,000
GBP
|
— |
7 4.1
GBP
|
— | — |
| Purchase of intangible assets, classified as investing activities |
4,100,000
GBP
|
— |
8,300,000
GBP
|
— | — |
| Cash advances and loans made to other parties, classified as investing activities |
1 .0
GBP
|
— |
–
GBP
|
— | — |
| Interest received, classified as investing activities |
800,000
GBP
|
— |
800,000
GBP
|
— | — |
| Cash flows from (used in) investing activities |
1 12.8
GBP
|
— |
71 .2
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments to acquire or redeem entity's shares |
–
GBP
|
— |
13,200,000
GBP
|
— | — |
| Proceeds from borrowings, classified as financing activities |
75,200,000
GBP
|
— |
25,700,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities |
19,000,000
GBP
|
— |
61 .8
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities |
13,500,000
GBP
|
— |
13,100,000
GBP
|
— | — |
| Dividends paid, classified as financing activities |
42,900,000
GBP
|
— |
40,600,000
GBP
|
— | — |
| Interest paid, classified as financing activities |
9,700,000
GBP
|
— |
7 .2
GBP
|
— | — |
| Cash flows from (used in) financing activities |
67 .6
GBP
|
— |
1 1 0.2
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
27 .8
GBP
|
— |
10,200,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents |
900,000
GBP
|
— |
1 .7
GBP
|
— | — |
| Cash and cash equivalents | — |
16,000,000
GBP
|
— |
44,700,000
GBP
|
36,200,000
GBP
|