HC Deb 08 March 1966 vol 725 c484W
Q23. Sir Knox Cunningham

asked the Prime Minister to what extent there was contamination of the atmosphere over the United Kingdom as a result of the radioactive debris released by the underground nuclear test in the Soviet Union in January; and what representation has been made to the Soviet authorities with regard to this test.

The Prime Minister

No contamination of the atmosphere over the United Kingdom was detected as a result of the Soviet nuclear test in January, 1965. The second part of the Question does not therefore arise.