Statement Of Changes In Equity [Abstract]
| Concept |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2022-04-25 to 2023-04-30 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
2021-04-26 to 2022-04-24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||
| Dividends recognised as distributions to non-controlling interests |
-
GBP
|
700,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
700,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
1,300,000
GBP
|
1,300,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
| Increase (decrease) through acquisition of subsidiary, equity |
-
GBP
|
4,000,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
4,000,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
1,900,000
GBP
|
1,900,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
1,900,000
GBP
|
| Increase (decrease) through transactions with owners, equity |
-
GBP
|
4,700,000
GBP
|
19,000,000
GBP
|
-
GBP
|
136,300,000
GBP
|
-
GBP
|
131,600,000
GBP
|
-
GBP
|
155,300,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
178,500,000
GBP
|
3,200,000
GBP
|
181,700,000
GBP
|
-
GBP
|
100,000
GBP
|
-
GBP
|
12,800,000
GBP
|
-
GBP
|
193,200,000
GBP
|
2,000,000
GBP
|
| Purchase of treasury shares |
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
155,300,000
GBP
|
-
GBP
|
155,300,000
GBP
|
-
GBP
|
155,300,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
193,200,000
GBP
|
-
GBP
|
193,200,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
193,200,000
GBP
|
-
GBP
|