Those were certainly 'the lathe' to have back in the day. A lot of museum quality models were built on them. The heyday era was probably mid 60's late 70's? That link provided looks like an excellent resource. But I also get the impression lurking on other metalworking forums including the UK sites that even those boys are having to scrounge for parts these days. What used to be plentiful & widely supported machine & tooling, not to mention all those cool & ingenious casting kit add-ons... is apparently getting to be skinny pickens & increasingly expensive. Unfortunately for Kanuckistan, that means US aftermarket suppliers (at 1.44 $C$U Fx as of today) or UK (shipping heavy things also spendy) or roll your own. Personally, I would treat it as an act of TLC restorative love... like finding a 1960 sports car that deserves to be driven amongst the modern plastic. (Well... on Sundays... not raining.. and not too far from home).
I met a guy late-70's who owned anML7, built some beautiful steam loco's on it. R.I.P He was Classic Brit model engineer, made the milling accessory entirely on the lathe (table, leadscrews, ball handles), this was mounted upright in the lathe, to make a tool, that eventually made the part... you know the routine.