Statement Of Cash Flows [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Income taxes paid, classified as operating activities |
8,900,000
GBP
|
75,400,000
GBP
|
| Income taxes refund, classified as operating activities |
–
GBP
|
26,900,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Dividends received from joint ventures, classified as investing activities |
–
GBP
|
6,400,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
295,500,000
GBP
|
291,900,000
GBP
|