Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — |
14,000,000
GBP
|
1 6.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — | — |
17,700,000
GBP
|
2 1.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — | — |
22,600,000
GBP
|
23. 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — | — | — |
37 .1
GBP
|
3 2.3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — |
106. 7
GBP
|
131,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — |
27,600,000
GBP
|
4 2.5
GBP
|
— | — | — | — | — | — | — |
50. 7
GBP
|
— | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — | — |
1,141,700,000
GBP
|
1, 189. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — |
22,500,000
GBP
|
23. 4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — | — |
513,400,000
GBP
|
503,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares | — | — | — | — | — | — | — |
24,900,000
GBP
|
36. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — | — |
22,500,000
GBP
|
22. 5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
3,200,000
GBP
|
513,400,000
GBP
|
22,500,000
GBP
|
25,300,000
GBP
|
24,900,000
GBP
|
22,500,000
GBP
|
100,000
GBP
|
466,300,000
GBP
|
501,900,000
GBP
|
503,200,000
GBP
|
2,300,000
GBP
|
22,500,000
GBP
|
23. 4
GBP
|
32. 0
GBP
|
36,700,000
GBP
|
0. 2
GBP
|
445,200,000
GBP
|
22,500,000
GBP
|
2,300,000
GBP
|
476,000,000
GBP
|
43. 3
GBP
|
23. 4
GBP
|
9,200,000
GBP
|
100,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Current tax liabilities | — | — | — | — | — | — | — |
6,000,000
GBP
|
7,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — | — |
4,100,000
GBP
|
7,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — | — |
675,400,000
GBP
|
687 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |