Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
2024-01-01 to 2024-12-29 |
As at 2024-12-29 |
As at 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
2023-01-02 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||||||||
| Profit (loss) |
2,300,000
GBP
|
3 9.3
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
39. 3
GBP
|
41,600,000
GBP
|
— | — |
3 6.4
GBP
|
–
GBP
|
1,600,000
GBP
|
3 6.4
GBP
|
38 .0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Cash flows from (used in) operations | — | — | — | — | — | — | — | — | — |
183,800,000
GBP
|
— | — | — | — | — | — |
216,100,000
GBP
|
— | — | — | — | — |
| Interest paid, classified as operating activities | — | — | — | — | — | — | — | — | — |
39,600,000
GBP
|
— | — | — | — | — | — |
38,100,000
GBP
|
— | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — | — | — | — | — |
19,700,000
GBP
|
— | — | — | — | — | — |
11,100,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — | — |
12 4.5
GBP
|
— | — | — | — | — | — |
166,900,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — | — | — | — | — | — |
1,100,000
GBP
|
— | — | — | — | — | — |
0. 9
GBP
|
— | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — | — | — | — | — | — |
68,000,000
GBP
|
— | — | — | — | — | — |
55,400,000
GBP
|
— | — | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — | — | — | — | — | — |
6,600,000
GBP
|
— | — | — | — | — | — |
4 . 2
GBP
|
— | — | — | — | — |
| Dividends received, classified as investing activities | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
| Interest received, classified as investing activities | — | — | — | — | — | — | — | — | — |
1,800,000
GBP
|
— | — | — | — | — | — |
600,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — | — |
62,300,000
GBP
|
— | — | — | — | — | — |
54. 8
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||||||||
| Proceeds from borrowings, classified as financing activities | — | — | — | — | — | — | — | — | — |
10. 4
GBP
|
— | — | — | — | — | — |
11,400,000
GBP
|
— | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — | — | — | — |
31,400,000
GBP
|
— | — | — | — | — | — |
38,300,000
GBP
|
— | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — | — | — | — |
17,300,000
GBP
|
— | — | — | — | — | — |
14,600,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — | — |
72,600,000
GBP
|
— | — | — | — | — | — |
71,300,000
GBP
|
— | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — | — | — | — | — | — |
10,400,000
GBP
|
— | — | — | — | — | — |
40. 8
GBP
|
— | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — | — | — | — | — | — |
4 .4
GBP
|
— | — | — | — | — | — |
1,300,000
GBP
|
— | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — | — | — |
111,900,000
GBP
|
12 6.7
GBP
|
— | — | — | — | — | — | — | — | — | — |