I remember GHT's lathe and some of his tooling being on display at one of the shows,probably at warwick as Gray says, somewhere around the early nineties if remembering correctly. Everything was beautifully made and finished as you would expect , so hopefully still preserved somewhere and being cared for. I saw GHT demonstrating using a super 7 at the M.E exhibition in the 80's, he was quite chatty and approachable, parting off MS bar with ease and a little showmanship! Made quite a few of his projects over the years and all of them have proved invaluable, particularly the small rotary table, small hole boring tools and boring head . Always thought he had a flair for design in that everything looked right , never built his dividing head as have a vertex one, but always thought it a most handsome design and a nice project.
Some of ET Westbury's engines were featured on the web a few years ago and were being cosmetically restored, can't remember if they were being sold off or not, but they were still around.
In the great scheme of things probably not important these things are preserved, but personally would hate to think of any of these things going to scrap.
Dave