Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
50,300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
50,300,000
GBP
|
8,500,000
GBP
|
58,800,000
GBP
|
–
GBP
|
79,300,000
GBP
|
20,500,000
GBP
|
–
GBP
|
— |
56,300,000
GBP
|
— |
47,300,000
GBP
|
–
GBP
|
–
GBP
|
9,000,000
GBP
|
47,300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
76,900,000
GBP
|
20,600,000
GBP
|
–
GBP
|
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||||||||||||||||
| Adjustments for income tax expense | — | — | — | — | — | — | — | — |
25,900,000
GBP
|
— | — | — | — | — |
22,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Adjustments for decrease (increase) in inventories | — | — | — | — | — | — | — | — |
6,700,000
GBP
|
— | — | — | — | — |
12,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Adjustments for provisions | — | — | — | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — |
3,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Adjustments for share-based payments | — | — | — | — | — | — | — | — |
2,800,000
GBP
|
— | — | — | — | — |
2,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other adjustments for non-cash items | — | — | — | — | — | — | — | — |
4,500,000
GBP
|
— | — | — | — | — |
2,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operations | — | — | — | — | — | — | — | — |
163,000,000
GBP
|
— | — | — | — | — |
126,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — | — | — | — |
29,200,000
GBP
|
— | — | — | — | — |
30,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — |
113,300,000
GBP
|
— | — | — | — | — |
78,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||||||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — | — | — | — | — |
5,400,000
GBP
|
— | — | — | — | — |
1,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — | — | — | — | — |
96,100,000
GBP
|
— | — | — | — | — |
60,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Interest received, classified as investing activities | — | — | — | — | — | — | — | — |
2,600,000
GBP
|
— | — | — | — | — |
3,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — |
86,000,000
GBP
|
— | — | — | — | — |
60,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||||||||||||||
| Proceeds from borrowings, classified as financing activities | — | — | — | — | — | — | — | — |
121,300,000
GBP
|
— | — | — | — | — |
247,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — | — | — |
88,000,000
GBP
|
— | — | — | — | — |
193,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — | — | — |
10,600,000
GBP
|
— | — | — | — | — |
8,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — |
33,000,000
GBP
|
— | — | — | — | — |
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — | — | — | — | — |
7,300,000
GBP
|
— | — | — | — | — |
9,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — | — | — | — | — | — | — |
5,700,000
GBP
|
— | — | — | — | — |
16,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — | — | — | — | — | — |
120,800,000
GBP
|
— |
124,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |