Does anyone know where to get a pullstart for the NT-16 from the UK? I believe the part is G70340-30 but I can only find it on US sites. Are there any other pullstarts which fit the NT-16?

You should be able to get this from your LHS. They are distributed by Ripmax so pretty much anywhere could order it for you. If you are not anywhere near a hobby shop, why not give CEN direct a try? It may be in the States but you probably wont have to wait that long.