Statement Of Cash Flows [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 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] | |||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
230 0
GBP
|
–
GBP
|
–
GBP
|
230. 0
GBP
|
— |
–
GBP
|
–
GBP
|
— |
–
GBP
|
125 5
GBP
|
125,500,000
GBP
|
–
GBP
|
–
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||
| Adjustments for decrease (increase) in inventories | — | — | — | — | — | — |
102,100,000
GBP
|
— | — | — | — | — | — |
4. 4
GBP
|
— | — | — |
| Adjustments for depreciation and amortisation expense | — | — | — | — | — | — |
63,700,000
GBP
|
— | — | — | — | — | — |
5 6.5
GBP
|
— | — | — |
| Adjustments for provisions | — | — | — | — | — | — |
1,700,000
GBP
|
— | — | — | — | — | — |
1,600,000
GBP
|
— | — | — |
| Adjustments for share-based payments | — | — | — | — | — | — |
9,900,000
GBP
|
— | — | — | — | — | — |
7,000,000
GBP
|
— | — | — |
| Adjustments for losses (gains) on disposal of non-current assets | — | — | — | — | — | — |
2,400,000
GBP
|
— | — | — | — | — | — |
300,000
GBP
|
— | — | — |
| 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
|