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] | ||||||||||||||||||||||
| Non-current 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
|
— | — | — | — | — | — | — | — |
| Other non-current financial assets | — | — | — |
308,217,000
GBP
|
— | — | — | — | — | — | — | — | — |
323,650,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-current assets | — | — | — |
1,240,960,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,215,313,000
GBP
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||
| Trade and other current receivables | — | — | — |
241,420,000
GBP
|
— | — | — | — | — | — | — | — | — |
225,022,000
GBP
|
— | — | — | — | — | — | — | — |
| Current tax assets, current | — | — | — |
-
GBP
|
— | — | — | — | — | — | — | — | — |
14,350,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
398,714,000
GBP
|
— | — | — | — | — | — | — | — | — |
340,988,000
GBP
|
340,988,000
GBP
|
— | — | — | — | — | — |
361,962,000
GBP
|
| Current assets | — | — | — |
2,602,289,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,416,881,000
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] | ||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||
| Other non-current provisions | — | — | — |
30,928,000
GBP
|
— | — | — | — | — | — | — | — | — |
33,786,000
GBP
|
— | — | — | — | — | — | — | — |
| Other non-current financial liabilities | — | — | — |
18,836,000
GBP
|
— | — | — | — | — | — | — | — | — |
26,848,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — |
463,764,000
GBP
|
— | — | — | — | — | — | — | — | — |
470,690,000
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||
| Other current provisions | — | — | — |
8,455,000
GBP
|
— | — | — | — | — | — | — | — | — |
6,615,000
GBP
|
— | — | — | — | — | — | — | — |
| Trade and other current payables | — | — | — |
966,127,000
GBP
|
— | — | — | — | — | — | — | — | — |
894,503,000
GBP
|
— | — | — | — | — | — | — | — |
| Other current financial liabilities | — | — | — |
14,215,000
GBP
|
— | — | — | — | — | — | — | — | — |
15,304,000
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities | — | — | — |
988,904,000
GBP
|
— | — | — | — | — | — | — | — | — |
966,422,000
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
|
— | — | — | — | — | — | — | — |