Thanks all, both for the info and the welcome!
My dad had a Plus 8 in his 30s. It became part of his identity, so it has been truly evocative that his second one passes down to me (even if I did need to fight for it!).
Sounds like Techniques might be a good shout, especially as it's the 'right' side of London for me (I'm NE).
Now, I have to find a way to get it working sufficiently to get it there!
