Statement Of Cash Flows [Abstract]
| Concept |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Cash flows from (used in) operations | — |
403,800,000
GBP
|
— |
431,000,000
GBP
|
| Interest paid, classified as operating activities | — |
28,500,000
GBP
|
— |
24,200,000
GBP
|
| Income taxes paid (refund), classified as operating activities | — |
55,900,000
GBP
|
— |
69,300,000
GBP
|
| Cash flows from (used in) operating activities | — |
319,400,000
GBP
|
— |
337,500,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
–
GBP
|
— |
204,300,000
GBP
|
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
900,000
GBP
|
— |
4,000,000
GBP
|
| Purchase of property, plant and equipment, classified as investing activities | — |
178. 4
GBP
|
— |
180,400,000
GBP
|
| Purchase of intangible assets, classified as investing activities | — |
3,400,000
GBP
|
— |
8,600,000
GBP
|
| Proceeds from government grants, classified as investing activities | — |
43,000,000
GBP
|
— |
10,900,000
GBP
|
| Interest received, classified as investing activities | — |
6,900,000
GBP
|
— |
8,300,000
GBP
|
| Cash flows from (used in) investing activities | — |
139,100,000
GBP
|
— |
409,800,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||||
| Proceeds from borrowings, classified as financing activities | — |
440,400,000
GBP
|
— |
336,000,000
GBP
|
| Repayments of borrowings, classified as financing activities | — |
449,400,000
GBP
|
— |
2 10.9
GBP
|
| Payments of lease liabilities, classified as financing activities | — |
17,500,000
GBP
|
— |
17,000,000
GBP
|
| Cash flows from (used in) financing activities | — |
182,600,000
GBP
|
— |
52 .4
GBP
|
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
2,300,000
GBP
|
— |
12 4.7
GBP
|
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||
| Effect of exchange rate changes on cash and cash equivalents | — |
6,200,000
GBP
|
— |
6,700,000
GBP
|
| Cash and cash equivalents |
166,800,000
GBP
|
— |
172 .5
GBP
|
— |