Statement Of Cash Flows [Abstract]
| Concept |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||
| Profit (loss) | — |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
5 8.6
GBP
|
58,600,000
GBP
|
–
GBP
|
–
GBP
|
38,600,000
GBP
|
–
GBP
|
–
GBP
|
38,600,000
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||
| Adjustments for income tax expense | — | — | — | — | — | — |
14,900,000
GBP
|
— | — | — | — | — |
9,000,000
GBP
|
— |
| Adjustments for decrease (increase) in inventories | — | — | — | — | — | — |
1 5 .6
GBP
|
— | — | — | — | — |
100,000
GBP
|
— |
| Adjustments for losses (gains) on disposal of non-current assets | — | — | — | — | — | — |
400,000
GBP
|
— | — | — | — | — |
–
GBP
|
— |
| Cash flows from (used in) operations | — | — | — | — | — | — |
72. 9
GBP
|
— | — | — | — | — |
58,400,000
GBP
|
— |
| Interest paid, classified as operating activities | — | — | — | — | — | — |
700,000
GBP
|
— | — | — | — | — |
0. 5
GBP
|
— |
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — | — |
5. 7
GBP
|
— | — | — | — | — |
8,800,000
GBP
|
— |
| Cash flows from (used in) operating activities | — | — | — | — | — | — |
66,500,000
GBP
|
— | — | — | — | — |
49. 1
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — | — | — | — | — |
4 . 8
GBP
|
— | — | — | — | — |
3 0.6
GBP
|
— |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — | — | — |
0. 2
GBP
|
— | — | — | — | — |
–
GBP
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — | — | — |
32 . 3
GBP
|
— | — | — | — | — |
13,900,000
GBP
|
— |
| Purchase of intangible assets, classified as investing activities | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
0 .1
GBP
|
— |
| Interest received, classified as investing activities | — | — | — | — | — | — |
1,100,000
GBP
|
— | — | — | — | — |
100,000
GBP
|
— |
| Cash flows from (used in) investing activities | — | — | — | — | — | — |
36 . 4
GBP
|
— | — | — | — | — |
45 . 6
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||
| Proceeds from issuing shares | — | — | — | — | — | — |
0. 1
GBP
|
— | — | — | — | — |
0. 1
GBP
|
— |
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — |
0. 5
GBP
|
— | — | — | — | — |
100,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — |
5. 1
GBP
|
— | — | — | — | — |
3. 1
GBP
|
— |
| Dividends paid, classified as financing activities | — | — | — | — | — | — |
10,600,000
GBP
|
— | — | — | — | — |
12. 3
GBP
|
— |
| Interest paid, classified as financing activities | — | — | — | — | — | — |
0. 5
GBP
|
— | — | — | — | — |
0. 3
GBP
|
— |
| Cash flows from (used in) financing activities | — | — | — | — | — | — |
16 . 6
GBP
|
— | — | — | — | — |
15 .7
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — | — | — |
13,500,000
GBP
|
— | — | — | — | — |
12. 2
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — | — | — |
0. 3
GBP
|
— | — | — | — | — |
2,300,000
GBP
|
— |
| Cash and cash equivalents |
112 . 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
96,400,000
GBP
|