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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment |
118 .6
GBP
|
— | — | — | — | — |
99,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
300,000
GBP
|
— | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other non-current receivables |
0. 3
GBP
|
— | — | — | — | — |
600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
1 0.5
GBP
|
— | — | — | — | — |
9 .7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
4 8 7.7
GBP
|
— | — | — | — | — |
4 69.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Current inventories |
3,462,900,000
GBP
|
— | — | — | — | — |
2, 920. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
193,200,000
GBP
|
— | — | — | — | — |
123,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
8 61 .6
GBP
|
— | — | — | — | — |
1 , 24 6 . 6
GBP
|
— | — | — | — | — |
1 , 2 3 4.1
GBP
|
— | — | — | — | — |
| Current assets |
4,546,400,000
GBP
|
— | — | — | — | — |
4, 322.5
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets |
5 , 0 3 4 .1
GBP
|
— | — | — | — | — |
4,792. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
31,900,000
GBP
|
— | — | — | — | — |
3 1.9
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
2,868,500,000
GBP
|
— | — | — | — | — |
3 ,0 55 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Share premium |
25,600,000
GBP
|
— | — | — | — | — |
24 . 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
3,439,300,000
GBP
|
25 .6
GBP
|
236,500,000
GBP
|
2,868,500,000
GBP
|
31 .9
GBP
|
276 . 8
GBP
|
3 ,6 25 . 2
GBP
|
3 , 0 55 .1
GBP
|
236,500,000
GBP
|
276. 8
GBP
|
24 . 9
GBP
|
3 1.9
GBP
|
3, 51 8 .4
GBP
|
3 1.9
GBP
|
2,950. 9
GBP
|
236,500,000
GBP
|
22. 3
GBP
|
276 . 8
GBP
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||
| Non-current provisions |
196,800,000
GBP
|
— | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other non-current payables |
214,800,000
GBP
|
— | — | — | — | — |
203 .4
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
7 2 .1
GBP
|
— | — | — | — | — |
5 4.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
503. 3
GBP
|
— | — | — | — | — |
281,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||
| Current provisions |
136. 5
GBP
|
— | — | — | — | — |
7 2.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables |
949,400,000
GBP
|
— | — | — | — | — |
8 07. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
1, 091.5
GBP
|
— | — | — | — | — |
8 85 . 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
1,594,800,000
GBP
|
— | — | — | — | — |
1 , 1 67. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — |