Statement Of Financial Position [Abstract]
| Concept |
As at 2022-12-25 |
As at 2022-12-25 |
As at 2022-12-25 |
As at 2022-12-25 |
As at 2022-12-25 |
As at 2022-12-25 |
As at 2022-12-25 |
As at 2021-12-26 |
As at 2021-12-26 |
As at 2021-12-26 |
As at 2021-12-26 |
As at 2021-12-26 |
As at 2021-12-26 |
As at 2021-12-26 |
As at 2020-12-27 |
As at 2020-12-27 |
As at 2020-12-27 |
As at 2020-12-27 |
As at 2020-12-27 |
As at 2020-12-27 |
As at 2020-12-27 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — |
96,500,000
GBP
|
— | — | — | — |
9 0.3
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — |
21,300,000
GBP
|
— | — | — | — |
1 9.4
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — |
25 .4
GBP
|
— | — | — | — |
52,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Current tax assets | — | — | — | — | — |
1,700,000
GBP
|
— | — | — | — |
200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — |
3 0.4
GBP
|
— | — | — | — |
42,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — |
520 .7
GBP
|
— | — | — | — |
522,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — |
2,200,000
GBP
|
— | — | — | — |
2,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — |
15 6.6
GBP
|
— | — | — | — |
105. 4
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — |
4 9.6
GBP
|
— | — | — | — |
4 9.6
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity |
9,000,000
GBP
|
500,000
GBP
|
2,200,000
GBP
|
4 9.6
GBP
|
0. 5
GBP
|
112,800,000
GBP
|
1 56 .6
GBP
|
2,300,000
GBP
|
105. 4
GBP
|
1,000,000
GBP
|
58,600,000
GBP
|
4 9.6
GBP
|
4,600,000
GBP
|
0. 5
GBP
|
8,800,000
GBP
|
2 .4
GBP
|
4 9.6
GBP
|
48,200,000
GBP
|
9. 7
GBP
|
3. 4
GBP
|
0. 5
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||
| Liabilities | — | — | — | — | — |
633 .5
GBP
|
— | — | — | — |
580 . 6
GBP
|
— | — | — | — | — | — | — | — | — | — |