HC Deb 10 March 1955 vol 538 c76W
64. Captain Kerby

asked the Secretary of State for the Home Department whether he is aware that by act and speech Professor Bruno Pontecorvo has now proved himself to be disloyal towards Her Majesty; and if he will now deprive this man of his British citizenship by naturalisation conferred upon him on account of Crown service.

Major Lloyd-George

I am taking immediate steps to institute proceedings under Section 20 of the British Nationality Act, 1948, to deprive Dr. Pontecorvo of his citizenship of the United Kingdom and Colonies.