Question to the Ministry of Defence:

To ask the Secretary of State for Defence, whether the Government has retained records of the health monitoring carried out during UK nuclear tests in the 1950s and 1960s.

As is normal practice, Service medical records are retained for nuclear test participants, but these individual military medical records are not held centrally.

Records held by the Atomic Weapons Establishment include those related to the single use film badges, which, as is normal practice, were destroyed after their measurements were recorded. In some cases measurements were not taken because the badges were lost or damaged in situ. Where measurements were found to align with background levels readings were, in some cases, not retained.