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 |
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 |
2021-04-01 to 2022-03-31 |
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 |
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 |
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
|
30,400,000
GBP
|
–
GBP
|
–
GBP
|
300,000
GBP
|
–
GBP
|
30,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
30,100,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
17,100,000
GBP
|
–
GBP
|
–
GBP
|
17,700,000
GBP
|
600,000
GBP
|
17,700,000
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||||||||||||
| Adjustments for income tax expense | — | — | — | — | — | — | — | — | — | — |
7,100,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,100,000
GBP
|
— | — | — | — | — | — |
| Adjustments for finance costs | — | — | — | — | — | — | — | — | — | — |
7,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
13,800,000
GBP
|
— | — | — | — | — | — |
| Adjustments for decrease (increase) in inventories | — | — | — | — | — | — | — | — | — | — |
41,200,000
GBP
|
— | — | — | — | — | — | — | — | — |
67,600,000
GBP
|
— | — | — | — | — | — |
| Adjustments for depreciation and amortisation expense | — | — | — | — | — | — | — | — | — | — |
32,200,000
GBP
|
— | — | — | — | — | — | — | — | — |
24,600,000
GBP
|
— | — | — | — | — | — |
| Adjustments for provisions | — | — | — | — | — | — | — | — | — | — |
600,000
GBP
|
— | — | — | — | — | — | — | — | — |
900,000
GBP
|
— | — | — | — | — | — |
| Adjustments for share-based payments | — | — | — | — | — | — | — | — | — | — |
5,800,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,300,000
GBP
|
— | — | — | — | — | — |
| 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
|