Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations | — |
35 4. 5
GBP
|
— |
413. 4
GBP
|
— |
| Interest paid, classified as operating activities | — |
6 0 . 5
GBP
|
— |
59. 2
GBP
|
— |
| Interest received, classified as operating activities | — |
0 .1
GBP
|
— |
0. 3
GBP
|
— |
| Income taxes paid (refund), classified as operating activities | — |
12 .4
GBP
|
— |
4 8 . 3
GBP
|
— |
| Cash flows from (used in) operating activities | — |
30 6.5
GBP
|
— |
306 . 2
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
183 .7
GBP
|
— |
–
GBP
|
— |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
203 . 5
GBP
|
— |
–
GBP
|
— |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
700,000
GBP
|
— |
1,600,000
GBP
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — |
19 1 .0
GBP
|
— |
163 . 8
GBP
|
— |
| Purchase of intangible assets, classified as investing activities | — |
18 .7
GBP
|
— |
10. 6
GBP
|
— |
| Proceeds from sales of other long-term assets, classified as investing activities | — |
–
GBP
|
— |
1. 5
GBP
|
— |
| Cash flows from (used in) investing activities | — |
2 28 . 8
GBP
|
— |
17 1 . 3
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from issuing shares | — |
2 .4
GBP
|
— |
0. 5
GBP
|
— |
| Proceeds from borrowings, classified as financing activities | — |
302 .6
GBP
|
— |
298 .9
GBP
|
— |
| Repayments of borrowings, classified as financing activities | — |
256 . 3
GBP
|
— |
4 7 5 .0
GBP
|
— |
| Payments of lease liabilities, classified as financing activities | — |
13. 2
GBP
|
— |
8 . 8
GBP
|
— |
| Dividends paid, classified as financing activities | — |
7 0. 9
GBP
|
— |
6 4 . 7
GBP
|
— |
| Cash flows from (used in) financing activities | — |
5 0 .4
GBP
|
— |
249 . 1
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
2 7. 3
GBP
|
— |
114. 2
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
300,000
GBP
|
— |
0 .1
GBP
|
— |
| Cash and cash equivalents |
3 1 7. 4
GBP
|
— |
289. 8
GBP
|
— |
404. 1
GBP
|