Deferred Shares (Details) £ / shares in Units, £ in Millions, $ in Millions	Dec. 31, 2024 GBP (£) £ / shares	Dec. 31, 2024 USD ($)	Dec. 31, 2023 £ / shares	Mar. 29, 2023 £ / shares
Deferred A shares
Class of Stock [Line Items]
Ordinary shares, liquidation preference	£ 1.0	$ 1.4
Deferred shares, nominal value (in gbp per share)	£ 1		£ 1	£ 1.00
Deferred B shares
Class of Stock [Line Items]
Deferred shares, nominal value (in gbp per share)				0.01
Deferred C shares
Class of Stock [Line Items]
Deferred shares, nominal value (in gbp per share)				£ 0.00000736245954692556