Statement Of Cash Flows [Abstract]
| Concept |
As at 2023-06-30 |
2022-07-01 to 2023-06-30 |
2021-07-01 to 2022-06-30 |
As at 2022-06-30 |
As at 2021-06-30 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations | — |
75,300,000
GBP
|
170,000,000
GBP
|
— | — |
| Interest paid, classified as operating activities | — |
4,900,000
GBP
|
12,100,000
GBP
|
— | — |
| Interest received, classified as operating activities | — |
300,000
GBP
|
5,800,000
GBP
|
— | — |
| Cash flows from (used in) operating activities | — |
67,500,000
GBP
|
153,800,000
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
–
GBP
|
8,800,000
GBP
|
— | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
400,000
GBP
|
600,000
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities | — |
31,000,000
GBP
|
26,100,000
GBP
|
— | — |
| Purchase of intangible assets, classified as investing activities | — |
13,100,000
GBP
|
14,500,000
GBP
|
— | — |
| Cash flows from (used in) investing activities | — |
44,500,000
GBP
|
32,400,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments of lease liabilities, classified as financing activities | — |
43,600,000
GBP
|
53,700,000
GBP
|
— | — |
| Cash flows from (used in) financing activities | — |
60,100,000
GBP
|
94,300,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
37,100,000
GBP
|
27,100,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
100,000
GBP
|
100,000
GBP
|
— | — |
| Cash and cash equivalents |
58,500,000
GBP
|
— | — |
95,700,000
GBP
|
68,700,000
GBP
|