Statement Of Financial Position [Abstract]
| Concept |
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 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 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||||||
| Property, plant and equipment | — | — |
398. 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
402. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — |
227 .5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
217 .5
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Inventories | — | — |
135. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
131,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current tax assets | — | — |
8,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
1 0.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — |
41,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
3 7.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other receivables | — | — |
526,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
56 9.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
668,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
1,949,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||
| Issued capital | — | — |
18,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
18,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — |
3, 166.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
3,0 3 0.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Share premium | — | — |
6,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
6,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — |
1,927 .6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
1,926,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — |
1,264,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
1, 129. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — |
500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
0. 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
3, 166.6
GBP
|
1, 722. 7
GBP
|
1,263,900,000
GBP
|
8,800,000
GBP
|
2,500,000
GBP
|
500,000
GBP
|
6,800,000
GBP
|
211,200,000
GBP
|
18,600,000
GBP
|
3,0 3 0.6
GBP
|
10,400,000
GBP
|
0. 9
GBP
|
4,400,000
GBP
|
18,500,000
GBP
|
208,500,000
GBP
|
6,800,000
GBP
|
1, 130. 6
GBP
|
1,000,000
GBP
|
1, 722. 7
GBP
|
10,400,000
GBP
|
600,000
GBP
|
155,900,000
GBP
|
6,800,000
GBP
|
1, 002.3
GBP
|
2,844. 1
GBP
|
1, 722. 7
GBP
|
0. 5
GBP
|
18,500,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||||||
| Trade and other payables | — | — |
764,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
925,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities | — | — |
60,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
80. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — |
108. 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
94. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |