Statement Of Cash Flows [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Income taxes paid (refund), classified as operating activities |
1,700,000
GBP
|
— | — |
2,400,000
GBP
|
— |
| Cash flows from (used in) operating activities |
52,400,000
GBP
|
— | — |
114,600,000
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Purchase of property, plant and equipment, classified as investing activities |
7,600,000
GBP
|
— | — |
6,300,000
GBP
|
— |
| Purchase of intangible assets, classified as investing activities |
1,000,000
GBP
|
— | — |
2,800,000
GBP
|
— |
| Cash flows from (used in) investing activities |
9,600,000
GBP
|
— | — |
9,100,000
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control |
–
GBP
|
— | — |
100,000
GBP
|
— |
| Proceeds from borrowings, classified as financing activities |
45,000,000
GBP
|
— | — |
–
GBP
|
— |
| Repayments of borrowings, classified as financing activities |
–
GBP
|
— | — |
21,900,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities |
24,300,000
GBP
|
— | — |
17,600,000
GBP
|
— |
| Cash flows from (used in) financing activities |
14,400,000
GBP
|
— | — |
45,300,000
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
47,600,000
GBP
|
— | — |
60,200,000
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents |
–
GBP
|
— | — |
–
GBP
|
— |
| Cash and cash equivalents | — |
19,500,000
GBP
|
67,100,000
GBP
|
— |
6,900,000
GBP
|