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Basis of preparation (Details)	6 Months Ended		12 Months Ended
	Jun. 30, 2025 uSD / gBP	Jun. 30, 2025 € / gBP uSD / gBP	Dec. 31, 2024 uSD / gBP	Dec. 31, 2024 € / gBP uSD / gBP	Jun. 30, 2025 € / gBP	Dec. 31, 2024 € / gBP
Basis of preparation [Abstract]
Average exchange rate	1.30	1.19	1.27	1.17
Closing exchange rate	1.37	1.37	1.26	1.26	1.17	1.18

X

- 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
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2025-03-27

+ Details

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Period Type:	duration

X

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard
-URIDate 2025-03-27

+ Details

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Basis of preparation

+ References

No definition available.

+ Details

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