Share-based compensation - Additional information (Details) |
12 Months Ended | ||||
|---|---|---|---|---|---|
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Sep. 30, 2022
USD ($)
£ / shares
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Sep. 30, 2022
USD ($)
$ / shares
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Sep. 30, 2021
£ / shares
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Sep. 30, 2020
£ / shares
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Sep. 30, 2019
£ / shares
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| Share-based compensation | |||||
| Weighted average exercise price | (per share) | £ 0.0001 | $ 0.0001 | £ 0.0001 | £ 0.0001 | £ 0.0001 |
| Weighted average remaining contractual life | 3 years | ||||
| Options To Ordinary Shares Conversion Ratio | 46.06 | 46.06 |
| X | ||||||||||
- Definition Options To Ordinary Shares Conversion Ratio No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The weighted average exercise price of share options outstanding in a share-based payment arrangement. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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