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 |
16 0 .7
GBP
|
— | — | — | — | — | — | — | — | — |
15 0.5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
5 9.7
GBP
|
— | — | — | — | — | — | — | — | — |
60. 5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill |
6 0 6.1
GBP
|
— | — | — | — | — | — | — | — | — |
631. 5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
18 4 .1
GBP
|
— | — | — | — | — | — | — | — | — |
169 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
16 .2
GBP
|
— | — | — | — | — | — | — | — | — |
21,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
1,082 . 5
GBP
|
— | — | — | — | — | — | — | — | — |
1,080,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories |
263 . 3
GBP
|
— | — | — | — | — | — | — | — | — |
1 8 7. 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
362. 5
GBP
|
— | — | — | — | — | — | — | — | — |
315,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
228 .1
GBP
|
— | — | — | — | — | — | — | — | — |
1 6 7. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
1 .7
GBP
|
— | — | — | — | — | — | — | — | — |
10,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets |
865. 5
GBP
|
— | — | — | — | — | — | — | — | — |
688,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
1,948,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
1 ,76 8 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital |
5,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
5,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
1,113,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
9 5 7. 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
23 1.4
GBP
|
— | — | — | — | — | — | — | — | — |
231,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
1,436,900,000
GBP
|
23 1.4
GBP
|
1 .0
GBP
|
1,113,000,000
GBP
|
5. 5
GBP
|
86 .0
GBP
|
3,100,000
GBP
|
3 .1
GBP
|
9 5 7. 6
GBP
|
700,000
GBP
|
1, 261. 3
GBP
|
3 . 5
GBP
|
3 .1
GBP
|
2 31.4
GBP
|
66,200,000
GBP
|
5,800,000
GBP
|
88 2.6
GBP
|
1. 9
GBP
|
6,000,000
GBP
|
3 .1
GBP
|
9 8.0
GBP
|
23 1.4
GBP
|
1 , 2 1 9.7
GBP
|
0. 5
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions |
4. 4
GBP
|
— | — | — | — | — | — | — | — | — |
4 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
1 5.6
GBP
|
— | — | — | — | — | — | — | — | — |
2 3 .0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
93 .1
GBP
|
— | — | — | — | — | — | — | — | — |
113 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||||
| Current provisions |
12. 8
GBP
|
— | — | — | — | — | — | — | — | — |
1 7. 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables |
37 3 .7
GBP
|
— | — | — | — | — | — | — | — | — |
33 0. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
41 8 .0
GBP
|
— | — | — | — | — | — | — | — | — |
3 93 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
5 11.1
GBP
|
— | — | — | — | — | — | — | — | — |
50 6. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |