Statement Of Cash Flows [Abstract]
| Concept |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations | — |
9 9. 6
GBP
|
225,600,000
GBP
|
— | — |
| Income taxes paid (refund), classified as operating activities | — |
22 . 3
GBP
|
41 .2
GBP
|
— | — |
| Cash flows from (used in) operating activities | — |
7 7. 3
GBP
|
184. 4
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
1 .0
GBP
|
–
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities | — |
39. 6
GBP
|
15 . 5
GBP
|
— | — |
| Purchase of intangible assets, classified as investing activities | — |
11 . 8
GBP
|
9. 5
GBP
|
— | — |
| Cash flows from (used in) investing activities | — |
5 0. 6
GBP
|
2 5 . 0
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments of lease liabilities, classified as financing activities | — |
2 9.1
GBP
|
20. 5
GBP
|
— | — |
| Dividends paid, classified as financing activities | — |
58 . 4
GBP
|
1 2 . 2
GBP
|
— | — |
| Interest paid, classified as financing activities | — |
4 . 8
GBP
|
3. 5
GBP
|
— | — |
| Cash flows from (used in) financing activities | — |
9 9. 5
GBP
|
4 7. 0
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
7 2 . 8
GBP
|
112,400,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
2,300,000
GBP
|
2,000,000
GBP
|
— | — |
| Cash and cash equivalents |
1 57. 5
GBP
|
— | — |
2 28 .0
GBP
|
113 .6
GBP
|