Statement Of Financial Position [Abstract]
| Concept |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
29. 0
GBP
|
— | — |
2 8.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
19 .9
GBP
|
— | — |
19. 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — |
6 1. 2
GBP
|
— | — |
6 0.8
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — | — |
2 9 .1
GBP
|
— | — |
3 2.8
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — |
15 8 .8
GBP
|
— | — |
1 4 1. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current inventories | — | — | — | — | — | — |
10 0 .6
GBP
|
— | — |
7 8 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — | — | — | — |
7 1 .1
GBP
|
— | — |
6 4.6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
2 7. 4
GBP
|
— | — |
28,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets | — | — | — | — | — | — |
2 0 0 .7
GBP
|
— | — |
17 1. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
8 .1
GBP
|
— | — |
8 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — |
30. 3
GBP
|
— | — |
3 0. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
0 .1
GBP
|
1. 5
GBP
|
8 .1
GBP
|
12 . 8
GBP
|
30,300,000
GBP
|
17 3 . 3
GBP
|
20 0.3
GBP
|
0 .1
GBP
|
12 8 .1
GBP
|
14 8. 4
GBP
|
8 .1
GBP
|
3 0. 2
GBP
|
1. 5
GBP
|
16. 4
GBP
|
10 4. 4
GBP
|
2 1.7
GBP
|
0. 4
GBP
|
2 9.9
GBP
|
—
GBP
|
8 .1
GBP
|
8 8.5
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — |
1. 6
GBP
|
— | — |
4,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — |
9,400,000
GBP
|
— | — |
0 .5
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial liabilities | — | — | — | — | — | — |
300,000
GBP
|
— | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — |
4 8.4
GBP
|
— | — |
5 9.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Trade and other current payables | — | — | — | — | — | — |
10 2 . 4
GBP
|
— | — |
9 5.4
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — |
11 0 . 8
GBP
|
— | — |
1 0 4 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |