Statement Of Cash Flows [Abstract]
| Concept |
2021-05-01 to 2022-04-30 |
2020-05-01 to 2021-04-30 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) investing activities [abstract] | ||
| Cash flows from (used in) decrease (increase) in restricted cash and cash equivalents |
2,000,000
GBP
|
4,000,000
GBP
|
| Purchase of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets |
431,000,000
GBP
|
331,000,000
GBP
|
| Proceeds from disposals of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets |
16,000,000
GBP
|
8,000,000
GBP
|