Disclosure Of Entity's Operating Segments [Text Block]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of entity's operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of operating segments [abstract] | ||||||||||||||||||||
| Disclosure of operating segments [line items] | ||||||||||||||||||||
| Revenue | — | — | — | — | — | — | — | — |
6,725,800,000
GBP
|
— |
5,441,300,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Tax expense (income) | — | — | — | — | — | — | — | — |
61,500,000
GBP
|
— |
52,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Profit (loss) before tax | — | — | — | — | — | — | — | — |
248,000,000
GBP
|
— |
206,600,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Profit (loss) |
1,200,000
GBP
|
–
GBP
|
185,300,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
186,500,000
GBP
|
185,300,000
GBP
|
154,200,000
GBP
|
–
GBP
|
153,800,000
GBP
|
–
GBP
|
— |
–
GBP
|
400,000
GBP
|
–
GBP
|
153,800,000
GBP
|
–
GBP
|
| Assets | — | — | — |
2,713,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,401,900,000
GBP
|
— | — | — | — | — |
| Liabilities | — | — | — |
1,969,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
1,771,000,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — |
224,300,000
GBP
|
— |
236,900,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — |
25,000,000
GBP
|
— |
55,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — |
228,400,000
GBP
|
— |
96,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Disclosure of products and services [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of products and services [abstract] | ||||||||||||||||||||
| Disclosure of products and services [line items] | ||||||||||||||||||||
| Disclosure of geographical areas [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of geographical areas [abstract] | ||||||||||||||||||||
| Disclosure of geographical areas [line items] | ||||||||||||||||||||
| Disclosure of major customers [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of major customers [abstract] | ||||||||||||||||||||
| Disclosure of major customers [line items] |