Statement Of Cash Flows [Abstract]
| Concept |
2021-10-01 to 2022-09-30 |
2020-10-01 to 2021-09-30 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) investing activities [abstract] | ||
| Proceeds from disposals of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets |
10,000,000
GBP
|
–
GBP
|
| Purchase of investments other than investments accounted for using equity method |
–
GBP
|
21,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
18 3
GBP
|
189,000,000
GBP
|
| Proceeds from sale or issue of treasury shares |
7,000,000
GBP
|
8,000,000
GBP
|
| Payments for debt issue costs |
1,000,000
GBP
|
1,000,000
GBP
|