I took this photo inside G-ARVM as she is currently preserved at Brooklands. I'm pretty sure that the grey bezeled instrument is a Radio Altimeter. I also checked a photo I took at RAF Cosford in 1999 and the same instrument was installed then. That doesn't constitute absolute proof that one was installed during the 1977 flight of course but I have a hunch that as a training aircraft, 'VM would have carried a similar instrument fit to what was installed in the Supers, apart from the autoland capacity which was never fitted on the Standards as far as I know.
