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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - £ / shares
Jun. 30, 2025
Dec. 31, 2024
Ordinary shares, nominal value (in gbp per share) £ 0.000025 £ 0.000025
Ordinary shares, authorized (in shares) 40,348,665 40,234,663
Ordinary shares, issued (in shares) 40,348,665 40,234,663
Ordinary shares, outstanding (in shares) 40,348,665 40,234,663
Deferred A shares    
Deferred shares, nominal value (in gbp per share) £ 1.00 £ 1
Deferred shares, authorized (in shares) 63,443 63,443
Deferred shares, issued (in shares) 63,443 63,443
Deferred shares, outstanding (in shares) 63,443 63,443