Question to the Ministry of Defence:

To ask the Secretary of State for Defence, how many service personnel have failed hearing assessments after operating as vehicle crew within (a) roles and( b) units equipped with an (i) Ajax and (ii) Ajax-platform vehicle.

It will take time to collate and review the information needed to answer the hon. Member's question. I will write to him shortly and place a copy of my letter in the Library of the House.