The first Standard VC10 had thrust reversers on all four engines, as did some/all (??) of the Supers. I beleive that on the Standard prototype it was found that the inboard reversers caused buffet and were romoved/not fitted on all the Standards (and presumably never fitted to the RAFs C1s). Now I believe that the Supers had there reversers removed in the late 60s (according to the old Ian Allen VC10 book) but was this for the same reason as to them not being fitted to the Standards and did all the Supers have them and when were they actually removed.
There is a reason for all this I promise
Tonks
