Statement Of Changes In Equity [Abstract]
| Concept |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2020-10-01 to 2021-09-30 |
2020-10-01 to 2021-09-30 |
2020-10-01 to 2021-09-30 |
2020-10-01 to 2021-09-30 |
2020-10-01 to 2021-09-30 |
2020-10-01 to 2021-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through transactions with owners, equity |
–
GBP
|
1,00 1
GBP
|
–
GBP
|
7,000
GBP
|
7,000
GBP
|
1,00 1
GBP
|
–
GBP
|
1,703,000
GBP
|
1 6
GBP
|
1,703,000
GBP
|
–
GBP
|
16,000
GBP
|
| Purchase of treasury shares |
–
GBP
|
791,000
GBP
|
–
GBP
|
7,000
GBP
|
7,000
GBP
|
791,000
GBP
|
–
GBP
|
1,492,000
GBP
|
1 6
GBP
|
1,492,000
GBP
|
–
GBP
|
16,000
GBP
|