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] | |||||
| Cash flows from (used in) operations |
267,100,000
GBP
|
— | — |
231,100,000
GBP
|
— |
| Interest paid, classified as operating activities |
8,000,000
GBP
|
— | — |
10,100,000
GBP
|
— |
| Interest received, classified as operating activities |
1,000,000
GBP
|
— | — |
1,800,000
GBP
|
— |
| Income taxes paid (refund), classified as operating activities |
57,100,000
GBP
|
— | — |
35,200,000
GBP
|
— |
| Cash flows from (used in) operating activities |
203,000,000
GBP
|
— | — |
187,600,000
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
2,200,000
GBP
|
— | — |
1 57.5
GBP
|
— |
| Cash flows from (used in) investing activities |
40,300,000
GBP
|
— | — |
190,200,000
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from issuing shares |
3,000,000
GBP
|
— | — |
179,500,000
GBP
|
— |
| Payments to acquire or redeem entity's shares |
2,900,000
GBP
|
— | — |
1,600,000
GBP
|
— |
| Repayments of borrowings, classified as financing activities |
700,000
GBP
|
— | — |
24,300,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities |
17,800,000
GBP
|
— | — |
16,400,000
GBP
|
— |
| Dividends paid, classified as financing activities |
76,200,000
GBP
|
— | — |
71,200,000
GBP
|
— |
| Cash flows from (used in) financing activities |
94,600,000
GBP
|
— | — |
66,000,000
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
68,100,000
GBP
|
— | — |
63,400,000
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents |
3,900,000
GBP
|
— | — |
11,800,000
GBP
|
— |
| Cash and cash equivalents | — |
158,400,000
GBP
|
86,400,000
GBP
|
— |
3 4.8
GBP
|