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 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment |
49,300,000
GBP
|
— | — | — | — | — | — | — | — | — |
3 3 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
73 .5
GBP
|
— | — | — | — | — | — | — | — | — |
39. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other non-current receivables |
22,600,000
GBP
|
— | — | — | — | — | — | — | — | — |
17. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
4 .1
GBP
|
— | — | — | — | — | — | — | — | — |
10 . 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
225,300,000
GBP
|
— | — | — | — | — | — | — | — | — |
15 7. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories |
19 . 4
GBP
|
— | — | — | — | — | — | — | — | — |
18 . 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
10 9 . 6
GBP
|
— | — | — | — | — | — | — | — | — |
10 3 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets |
50,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
9 4 9 .1
GBP
|
— | — | — | — | — | — | — | — | — |
1, 2 9 0 . 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
3 7 9 .1
GBP
|
| Current assets |
1 ,1 2 8 . 6
GBP
|
— | — | — | — | — | — | — | — | — |
1 ,4 1 2 .8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
1, 3 5 3 . 9
GBP
|
— | — | — | — | — | — | — | — | — |
1, 5 7 0 . 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital |
9,300,000
GBP
|
— | — | — | — | — | — | — | — | — |
9,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
60 4.5
GBP
|
— | — | — | — | — | — | — | — | — |
1, 4 0 8 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
—
GBP
|
— | — | — | — | — | — | — | — | — |
1,0 1 3.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares |
66,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
8 0 4 .1
GBP
|
—
GBP
|
18 3 . 2
GBP
|
60 4 .5
GBP
|
66 .0
GBP
|
9,300,000
GBP
|
6. 4
GBP
|
1,2 8 8 . 5
GBP
|
—
GBP
|
1, 4 0 8 .7
GBP
|
1, 07 3 .7
GBP
|
1 ,288. 5
GBP
|
1 ,01 3.0
GBP
|
18 3 . 2
GBP
|
11. 6
GBP
|
9,300,000
GBP
|
1 ,13 5 . 7
GBP
|
7,100,000
GBP
|
1,15 3 . 5
GBP
|
3 .1
GBP
|
—
GBP
|
—
GBP
|
15 3 . 3
GBP
|
17 5 .1
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions |
14 3 . 2
GBP
|
— | — | — | — | — | — | — | — | — |
8 1.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
2 0 4 .7
GBP
|
— | — | — | — | — | — | — | — | — |
118 . 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Trade and other current payables |
332 .8
GBP
|
— | — | — | — | — | — | — | — | — |
368,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
3 4 5 .1
GBP
|
— | — | — | — | — | — | — | — | — |
378 . 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
549,800,000
GBP
|
— | — | — | — | — | — | — | — | — |
4 9 6 . 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |