That's the LSL adapter. Dunno if that is still available. I know that the Storz adapter is. I'm in Wickford, near Basildon so a bit farther than Cambridge for you John. However, if you want it I can ship it to you.
Yes you can use the original hoses but that depends on which handlebar you use with the adapter. The bar I have for it is a nearly flat MX bar.
I'll wait for a while before I do that George. Its going into the shop to sort the carbs out first. Theres a definite glitch that needs looking at. The new brake pads are marginally better...ho hum