Statement Of Cash Flows [Abstract]
| Concept |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
24,700,000
GBP
|
24,700,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
24,700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2,400,000
GBP
|
2,600,000
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
2,600,000
GBP
|
200,000
GBP
|
–
GBP
|
–
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||||||||||||
| Adjustments for income tax expense | — | — | — | — |
9,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
1,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Adjustments for finance costs | — | — | — | — |
6,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
7,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Adjustments for decrease (increase) in inventories | — | — | — | — |
6,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
9,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Adjustments for depreciation and amortisation expense | — | — | — | — |
24,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
29,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Adjustments for provisions | — | — | — | — |
600,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Adjustments for share-based payments | — | — | — | — |
6,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
5,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — |
1,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — |
61,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
24,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — |
5,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — |
2,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Interest received, classified as investing activities | — | — | — | — |
700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — |
7,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
7,700,000
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
|
— | — | — | — | — | — | — | — | — | — |
2,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Proceeds from borrowings, classified as financing activities | — | — | — | — |
2,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — |
10,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
35,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — |
18,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
17,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — |
33,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
32,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — |
21,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — |
40,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
19,100,000
GBP
|
— | — | — | — | — | — | — |
19,500,000
GBP
|