Statement Of Financial Position [Abstract]
| Concept |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
12,900,000
GBP
|
— | — |
11,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
22,000,000
GBP
|
— | — |
23,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — |
266,100,000
GBP
|
— | — |
182,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — | — |
118,600,000
GBP
|
— | — |
21,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
1,400,000
GBP
|
— | — |
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — |
421,300,000
GBP
|
— | — |
241,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current inventories | — | — | — | — | — | — |
900,000
GBP
|
— | — |
1,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — | — | — | — |
77,700,000
GBP
|
— | — |
68,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
73,200,000
GBP
|
— | — |
116,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
95,000,000
GBP
|
| Current assets | — | — | — | — | — | — |
155,100,000
GBP
|
— | — |
190,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
576,400,000
GBP
|
— | — |
432,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
3,100,000
GBP
|
— | — |
3,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — |
11,300,000
GBP
|
— | — |
21,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — |
224,000,000
GBP
|
— | — |
223,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — |
293,200,000
GBP
|
— | — |
266,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
–
GBP
|
42,300,000
GBP
|
35,100,000
GBP
|
3,100,000
GBP
|
224,000,000
GBP
|
11,300,000
GBP
|
293,200,000
GBP
|
20,300,000
GBP
|
3,100,000
GBP
|
266,200,000
GBP
|
223,200,000
GBP
|
42,300,000
GBP
|
800,000
GBP
|
21,900,000
GBP
|
150,900,000
GBP
|
2,800,000
GBP
|
42,300,000
GBP
|
–
GBP
|
31,900,000
GBP
|
22,000,000
GBP
|
205,900,000
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — |
800,000
GBP
|
— | — |
600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — |
1,600,000
GBP
|
— | — |
1,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — |
137,300,000
GBP
|
— | — |
65,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions | — | — | — | — | — | — |
2,700,000
GBP
|
— | — |
2,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables | — | — | — | — | — | — |
48,300,000
GBP
|
— | — |
45,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — |
145,900,000
GBP
|
— | — |
101,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — |
283,200,000
GBP
|
— | — |
166,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |