Statement Of Financial Position [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-01-02 |
As at 2022-01-02 |
As at 2022-01-02 |
As at 2022-01-02 |
As at 2022-01-02 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2021-01-03 |
As at 2021-01-02 |
As at 2021-01-02 |
As at 2021-01-02 |
As at 2021-01-02 |
As at 2021-01-02 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment |
3 90.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
34 3.8
GBP
|
— | — | — | — | — | — | — |
| Right-of-use assets |
2 81 .6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
26 3.6
GBP
|
— | — | — | — | — | — | — |
| Non-current assets |
69 1 .4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
6 22 .3
GBP
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current inventories |
4 0.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 7. 9
GBP
|
— | — | — | — | — | — | — |
| Trade and other current receivables |
50,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
3 7. 6
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents |
1 9 1.6
GBP
|
— | — | — | — | — | — | — | — |
1 98 .6
GBP
|
— | — | — |
19 8.6
GBP
|
— |
3 6.8
GBP
|
— | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1. 6
GBP
|
— | — | — | — | — | — | — |
| Current assets |
28 3.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 6 6 .1
GBP
|
— | — | — | — | — | — | — |
| Assets |
9 74.4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
888. 4
GBP
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital |
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 .0
GBP
|
— | — | — | — | — | — | — |
| Retained earnings |
420,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
4 06 .8
GBP
|
— | — | — | — | — | — | — |
| Share premium |
2 3 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
20,000,000
GBP
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent |
44 6.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
429. 2
GBP
|
— | — | — | — | — | — | — |
| Equity |
446 .0
GBP
|
2 3 .1
GBP
|
400,000
GBP
|
42 0.5
GBP
|
2,000,000
GBP
|
0 .4
GBP
|
2,000,000
GBP
|
20,000,000
GBP
|
40 6.8
GBP
|
429. 2
GBP
|
40 6.8
GBP
|
20,000,000
GBP
|
2,000,000
GBP
|
42 9. 2
GBP
|
400,000
GBP
|
— |
2,000,000
GBP
|
0 .4
GBP
|
15,700,000
GBP
|
32 1.6
GBP
|
30 3.5
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions |
2 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 . 8
GBP
|
— | — | — | — | — | — | — |
| Deferred tax liabilities |
26 . 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 0. 0
GBP
|
— | — | — | — | — | — | — |
| Non-current liabilities |
2 8 4. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 52 .3
GBP
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions |
3 . 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
4. 2
GBP
|
— | — | — | — | — | — | — |
| Trade and other current payables |
1 9 1 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 5 3. 4
GBP
|
— | — | — | — | — | — | — |
| Current liabilities |
2 4 4.1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 0 6 . 9
GBP
|
— | — | — | — | — | — | — |
| Liabilities |
5 2 8 . 4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
459,200,000
GBP
|
— | — | — | — | — | — | — |