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Related-Party Transactions
 12 Months Ended
Dec. 31, 2025
Related Party Transactions [Abstract]  
Related-party transactions Related-Party Transactions
Joint venture in which the Company is a venturer
During 2025, the Company maintained its 50% investment in the equity of the joint venture, Nikkei-MEL Company Limited. During 2025, the Elektron Segment made $0.5 million of sales to the joint venture (2024: $0.5 million). At December 31, 2025, the gross and net amounts receivable from the joint venture amounted to $0.2 million (2024: $0.1 million).
Transactions with other related parties
At December 31, 2025, the directors and key management comprising the members of the Executive Leadership Team owned 357,959 £0.50 ordinary shares (2024: 321,731 £0.50 ordinary shares) and held awards over a further 966,029, £0.50 ordinary shares (2024: 906,024, £0.50 ordinary shares).
During the years ended December 31, 2025, and December 31, 2024, share options held by members of the Executive Leadership Team were exercised.
Other than the transactions with the joint ventures, associates and key management personnel disclosed above, no other related-party transactions have been identified.