Statement Of Cash Flows [Abstract]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||||
| Profit (loss) | — |
–
GBP
|
–
GBP
|
–
GBP
|
56,800,000
GBP
|
56,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
41,900,000
GBP
|
41,900,000
GBP
|
— |
| Cash flows from (used in) operations | — | — | — | — |
58,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
74. 3
GBP
|
— | — |
| Interest paid, classified as operating activities | — | — | — | — |
65,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
52. 7
GBP
|
— | — |
| Interest received, classified as operating activities | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — |
5,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
46,400,000
GBP
|
— | — |
| Cash flows from (used in) operating activities | — | — | — | — |
900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
24. 8
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
200,000
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — |
9,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
5,100,000
GBP
|
— | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — |
14,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
10. 3
GBP
|
— | — |
| Cash flows from (used in) investing activities | — | — | — | — |
23,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
15. 2
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||||||
| Payments to acquire or redeem entity's shares | — | — | — | — |
400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
3. 9
GBP
|
— | — |
| Proceeds from borrowings, classified as financing activities | — | — | — | — |
99,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
49,400,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — |
43,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
62. 9
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — |
9,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
9. 9
GBP
|
— | — |
| Dividends paid, classified as financing activities | — | — | — | — |
18,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
4. 9
GBP
|
— | — |
| Cash flows from (used in) financing activities | — | — | — | — |
27,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
32,200,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — |
2,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
72,200,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — |
6,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2. 4
GBP
|
— | — |
| Cash and cash equivalents |
50,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
41,700,000
GBP
|
— | — | — | — | — |
116,300,000
GBP
|