Analysis Of Income And Expense [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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||
| Revenue | — | — | — | — | — | — | — | — | — |
3,988 .3
GBP
|
— | — | — | — |
3,989,500,000
GBP
|
— | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||||
| Finance income (cost) | — | — | — | — | — | — | — | — | — |
37 .8
GBP
|
— | — | — | — |
37 .5
GBP
|
— | — | — | — | — |
| Other finance cost | — | — | — | — | — | — | — | — | — |
39,600,000
GBP
|
— | — | — | — |
38 .1
GBP
|
— | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — | — | — | — | — |
400,000
GBP
|
— | — | — | — |
600,000
GBP
|
— | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income |
2 .0
GBP
|
25,400,000
GBP
|
9,100,000
GBP
|
–
GBP
|
–
GBP
|
4 . 8
GBP
|
–
GBP
|
–
GBP
|
3 9.3
GBP
|
2 7. 4
GBP
|
36 .4
GBP
|
–
GBP
|
1,600,000
GBP
|
42,400,000
GBP
|
44 .0
GBP
|
–
GBP
|
–
GBP
|
600,000
GBP
|
–
GBP
|
6,600,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — | — |
25,400,000
GBP
|
— | — | — | — |
42 .4
GBP
|
— | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — | — |
2,000,000
GBP
|
— | — | — | — |
1,600,000
GBP
|
— | — | — | — | — |