Statement Of Changes In Equity [Abstract]
| Concept |
As at 2023-09-30 |
2022-10-01 to 2023-09-30 |
As at 2023-09-30 |
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 |
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 |
As at 2022-09-30 |
2021-10-01 to 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 |
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 |
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 |
As at 2021-09-30 |
As at 2021-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity |
7,463,000
GBP
|
— |
42,000
GBP
|
— | — |
105,120,000
GBP
|
23,484,000
GBP
|
— | — |
1,223,000
GBP
|
2,000
GBP
|
— |
137,246,000
GBP
|
— |
311,000
GBP
|
— | — | — |
23,484,000
GBP
|
— | — |
133,850,000
GBP
|
— |
96,082,000
GBP
|
13,383,000
GBP
|
1,217,000
GBP
|
5,000
GBP
|
— |
292,000
GBP
|
4,000
GBP
|
1,820,000
GBP
|
80,083,000
GBP
|
106,299,000
GBP
|
1,208,000
GBP
|
23,484,000
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
GBP
|
— |
10,942,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
— |
10,942,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— |
13,315,000
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
13,315,000
GBP
|
— | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — | — |
4,615,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
17,749,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income | — |
269,000
GBP
|
— |
11,978,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
5,920,000
GBP
|
— | — |
–
GBP
|
— |
6,327,000
GBP
|
— |
19,000
GBP
|
–
GBP
|
–
GBP
|
— |
19,520,000
GBP
|
11,563,000
GBP
|
— |
–
GBP
|
— | — | — | — |
31,064,000
GBP
|
— | — | — | — | — | — | — |
| Issue of equity | — |
–
GBP
|
— |
–
GBP
|
–
GBP
|
— | — |
6,000
GBP
|
–
GBP
|
— | — |
6,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
9,000
GBP
|
9,000
GBP
|
— |
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
–
GBP
|
— |
4,802,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
— |
4,802,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— |
4,834,000
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
4,834,000
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
–
GBP
|
— |
1,189,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
— |
1,189,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— |
1,115,000
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
1,115,000
GBP
|
— | — | — | — | — | — | — |