Basis of preparation - Schedule of Foreign currency exchange rate (Details) - $ / £	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Corporate Information And Statement Of IFRS Compliance [Abstract]
Closing foreign exchange rate	1.23681	1.31336
Average foreign exchange rate	1.23708	1.34361

Corporate Information And Statement Of IFRS Compliance [Abstract]

No definition available.

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- Definition

The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

+ Details

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- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

+ Details

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