Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-29 |
2023-01-02 to 2023-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) investing activities [abstract] | ||
| Dividends received from joint ventures, classified as investing activities |
600,000
GBP
|
500,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
29,200,000
GBP
|
28,300,000
GBP
|
| Dividends paid to non-controlling interests, classified as financing activities |
2,900,000
GBP
|
1,500,000
GBP
|