The question taxpayers should be asking is this - "If the RAF is incapable of assuring the airworthiness of simple gliders and motor gliders, of which hundreds of examples of the same types continue to be operated safely worldwide, how can we be sure much more advanced platforms, such as Typhoon and Lightning II, are airworthy?"
(A supplementary question might be - "Who is being held accountable for this gross waste of taxpayers' money?").