Statement Of Changes In Equity [Abstract]
| Concept |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
As at 2024-12-28 |
2023-12-31 to 2024-12-28 |
As at 2024-12-28 |
As at 2024-12-28 |
2023-12-31 to 2024-12-28 |
As at 2024-12-28 |
As at 2023-12-30 |
As at 2023-12-30 |
2023-01-01 to 2023-12-30 |
As at 2023-12-30 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
As at 2023-12-30 |
2023-01-01 to 2023-12-30 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||
| Equity | — | — |
9,900,000
GBP
|
— |
37,600,000
GBP
|
300,000
GBP
|
— |
27,400,000
GBP
|
7,800,000
GBP
|
27,400,000
GBP
|
— |
300,000
GBP
|
— | — |
35,500,000
GBP
|
— |
34,000,000
GBP
|
24,600,000
GBP
|
9,100,000
GBP
|
300,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) |
-
GBP
|
-
GBP
|
— |
3,600,000
GBP
|
— | — |
3,600,000
GBP
|
— | — | — |
-
GBP
|
— |
2,700,000
GBP
|
2,700,000
GBP
|
— |
-
GBP
|
— | — | — | — |
| Other comprehensive income | — | — | — |
-
GBP
|
— | — | — | — | — | — | — | — | — |
-
GBP
|
— | — | — | — | — | — |
| Comprehensive income |
-
GBP
|
-
GBP
|
— |
3,600,000
GBP
|
— | — |
3,600,000
GBP
|
— | — | — |
-
GBP
|
— |
2,700,000
GBP
|
2,700,000
GBP
|
— |
-
GBP
|
— | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — |
2,800,000
GBP
|
— |
2,800,000
GBP
|
-
GBP
|
— |
-
GBP
|
— | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — | — | — | — | — | — |
-
GBP
|
— |
1,400,000
GBP
|
1,400,000
GBP
|
— |
-
GBP
|
— | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
-
GBP
|
-
GBP
|
— |
500,000
GBP
|
— | — |
500,000
GBP
|
— | — | — |
-
GBP
|
— |
200,000
GBP
|
200,000
GBP
|
— |
-
GBP
|
— | — | — | — |