Having had a fruitless search for such a remote myself, I have taken an alternative approach. It occurred to me that a J or P remote could be adapted (not modified) to serve the purpose. I have in development such an adaptation that does not butcher the original remote, but utilises the main casting within which a suitable mechanism is arranged to actuate the ENV 75. My logic is that sxx's law dictates that once I have progressed far enough, sure enough a remote will come along. Development has reached the stage that I am confident that it will succeed. The internal gearing works well enough; picture of the skeleton is appended. Eventually it is intended that the business end will take the form of an enclosed octagon.
Nigel - I was with Tom Dark yesterday picking up a Q type remote. He was happy to let it be known that he has just made a batch with a few unspoken for. You can reach him on 07737 225798. Tim