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 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 2020-01-01 |
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 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||
| Property, plant and equipment | — | — | — |
4,7 42
GBP
|
— | — | — | — | — | — | — | — | — |
5,091,000
GBP
|
— | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — |
31,069,000
GBP
|
— | — | — | — | — | — | — | — | — |
38,511,000
GBP
|
— | — | — | — | — | — | — | — |
| Goodwill | — | — | — |
547,509,000
GBP
|
— | — | — | — | — | — | — | — | — |
54 7,509
GBP
|
— | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — |
127,809,000
GBP
|
— | — | — | — | — | — | — | — | — |
143,585,000
GBP
|
— | — | — | — | — | — | — | — |
| Inventories | — | — | — |
1,962,155,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,836,521,000
GBP
|
— | — | — | — | — | — | — | — |
| Trade and other receivables | — | — | — |
454,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,544,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
398,714,000
GBP
|
— | — | — | — | — | — | — | — | — |
340,988,000
GBP
|
340,988,000
GBP
|
— | — | — | — | — | — |
361,962,000
GBP
|
| Assets | — | — | — |
3,843,249,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,632,194,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||
| Issued capital | — | — | — |
111,154,000
GBP
|
— | — | — | — | — | — | — | — | — |
111,127,000
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
1,094,833,000
GBP
|
— | — | — | — | — | — | — | — | — |
899,785,000
GBP
|
— | — | — | — | — | — | — | — |
| Share premium | — | — | — |
361,081,000
GBP
|
— | — | — | — | — | — | — | — | — |
360,657,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — |
2,390,581,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,195,082,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity |
3,372,000
GBP
|
1,094,833,000
GBP
|
1,098,205,000
GBP
|
2,390,581,000
GBP
|
823,513,000
GBP
|
361,081,000
GBP
|
111,154,000
GBP
|
899,785,000
GBP
|
111,127,000
GBP
|
823,513,000
GBP
|
6,956,000
GBP
|
906,7 41
GBP
|
360,657,000
GBP
|
2,195,082,000
GBP
|
— |
841,560,000
GBP
|
359,857,000
GBP
|
1,271,966,000
GBP
|
837,940,000
GBP
|
3,620,000
GBP
|
7 4,169
GBP
|
— |
| Liabilities [abstract] | ||||||||||||||||||||||
| Trade and other payables | — | — | — |
211,296,000
GBP
|
— | — | — | — | — | — | — | — | — |
139,316,000
GBP
|
— | — | — | — | — | — | — | — |
| Other financial liabilities | — | — | — |
164,260,000
GBP
|
— | — | — | — | — | — | — | — | — |
253,103,000
GBP
|
— | — | — | — | — | — | — | — |
| Current tax liabilities | — | — | — |
107,000
GBP
|
— | — | — | — | — | — | — | — | — |
-
GBP
|
— | — | — | — | — | — | — | — |
| Liabilities | — | — | — |
1,452,668,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,437,112,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
3,843,249,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,632,194,000
GBP
|
— | — | — | — | — | — | — | — |