Raf Fighter Controllers (Training) Mr. Wilson To ask the Secretary of State for Defence how many simulators have been installed at United Kingdom air defence ground environment radar stations to provide interception control training for RAF fighter controllers; when each one was installed; and what plans exist to install further such simulators. Mr. Ian Stewart Four simulators have been installed at United Kingdom air defence ground environment operational units to provide interception control training for RAF fighter controllers. They were installed between 1974 and 1980.The improved UKADGE is being equipped with a modern centralised interception control simulation facility, to which all RAF interceptor controllers will have access, in order to maintain operational standards.