Statement Of Changes In Equity [Abstract]
| Concept |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2024-09-30 |
2023-06-01 to 2024-09-30 |
2023-06-01 to 2024-09-30 |
2023-06-01 to 2024-09-30 |
2023-06-01 to 2024-09-30 |
2023-06-01 to 2024-09-30 |
2023-06-01 to 2024-09-30 |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2023-05-31 |
As at 2023-05-31 |
As at 2023-05-31 |
As at 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
As at 2023-05-31 |
As at 2023-05-31 |
2022-06-01 to 2023-05-31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||
| Equity |
205. 2
GBP
|
42 .3
GBP
|
3 .1
GBP
|
24,500,000
GBP
|
— | — | — | — | — | — |
2 24.4
GBP
|
8 9 .1
GBP
|
3 .1
GBP
|
28,800,000
GBP
|
3 7. 5
GBP
|
278 .2
GBP
|
— | — | — | — | — |
2 24 .1
GBP
|
42 . 3
GBP
|
— |
3 5 .1
GBP
|
42 .3
GBP
|
3 .1
GBP
|
2 24 . 0
GBP
|
11 . 3
GBP
|
2 93.2
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — |
—
GBP
|
—
GBP
|
32 . 5
GBP
|
32 . 5
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — |
—
GBP
|
—
GBP
|
4. 6
GBP
|
—
GBP
|
—
GBP
|
— | — |
4 .6
GBP
|
— | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — |
13. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2. 4
GBP
|
— | — | — | — | — | — |
| Comprehensive income | — | — | — | — |
13,000,000
GBP
|
—
GBP
|
32 .5
GBP
|
4 5. 5
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — |
—
GBP
|
—
GBP
|
4 .6
GBP
|
2,400,000
GBP
|
—
GBP
|
— | — |
2,200,000
GBP
|
— | — | — | — | — | — |
| Issue of equity | — | — | — | — |
—
GBP
|
—
GBP
|
—
GBP
|
300,000
GBP
|
300,000
GBP
|
—
GBP
|
— | — | — | — | — | — |
—
GBP
|
100,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
— | — |
0 .1
GBP
|
— | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — |
—
GBP
|
—
GBP
|
24. 3
GBP
|
24 .3
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — |
—
GBP
|
—
GBP
|
14 .5
GBP
|
—
GBP
|
—
GBP
|
— | — |
14 .5
GBP
|
— | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — |
—
GBP
|
—
GBP
|
5 . 8
GBP
|
5 .8
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — |
—
GBP
|
—
GBP
|
0 .5
GBP
|
—
GBP
|
—
GBP
|
— | — |
0 .5
GBP
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — |
—
GBP
|
—
GBP
|
2,300,000
GBP
|
2,300,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — |
—
GBP
|
—
GBP
|
2,200,000
GBP
|
—
GBP
|
—
GBP
|
— | — |
2,200,000
GBP
|
— | — | — | — | — | — |