Statement Of Changes In Equity [Abstract]
| Concept |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
As at 2023-09-30 |
As at 2023-09-30 |
2022-10-01 to 2023-09-30 |
As at 2023-09-30 |
As at 2023-09-30 |
2022-10-01 to 2023-09-30 |
As at 2023-09-30 |
2022-10-01 to 2023-09-30 |
2021-10-01 to 2022-09-30 |
As at 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
As at 2022-09-30 |
2021-10-01 to 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
2021-10-01 to 2022-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||
| Equity | — | — |
159,399,000
GBP
|
8,963,000
GBP
|
— |
2,377,000
GBP
|
52,000
GBP
|
— |
166,037,000
GBP
|
— | — |
8,930,000
GBP
|
— | — |
133,394,000
GBP
|
— |
124,886,000
GBP
|
473,000
GBP
|
51,000
GBP
|
— |
740,000
GBP
|
122,739,000
GBP
|
130,708,000
GBP
|
51,000
GBP
|
8,658,000
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||
| Profit (loss) |
68,219,000
GBP
|
—
GBP
|
— | — |
—
GBP
|
— | — |
—
GBP
|
— |
68,219,000
GBP
|
—
GBP
|
— |
46,739,000
GBP
|
—
GBP
|
— |
—
GBP
|
— | — | — |
46,739,000
GBP
|
— | — | — | — | — |
| Issue of equity |
—
GBP
|
33,000
GBP
|
— | — |
1,000
GBP
|
— | — |
—
GBP
|
— |
34,000
GBP
|
—
GBP
|
— |
—
GBP
|
—
GBP
|
— |
272,000
GBP
|
— | — | — |
272,000
GBP
|
— | — | — | — | — |
| Dividends recognised as distributions to owners |
33,294,000
GBP
|
—
GBP
|
— | — |
—
GBP
|
— | — |
—
GBP
|
— |
33,294,000
GBP
|
—
GBP
|
— |
50,383,000
GBP
|
—
GBP
|
— |
—
GBP
|
— | — | — |
50,383,000
GBP
|
— | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
110,000
GBP
|
—
GBP
|
— | — |
—
GBP
|
— | — |
—
GBP
|
— |
110,000
GBP
|
—
GBP
|
— |
6,162,000
GBP
|
—
GBP
|
— |
—
GBP
|
— | — | — |
6,162,000
GBP
|
— | — | — | — | — |