Thanks Jason, I have a load of scaffold tube at the back of the shop, if it is the right diameter.
My problem is that because I use the walls for mounting all my tooling, the only way I can do it is a pole from floor to ceiling. So that lift will be ideal.
I do have a wheelchair lift kindly donated by Peter (HS93), but that works on the leadscrew and nut method, and has a cantilever arm that goes up and down, and so requires room to manoeuvre, but should mount rather nicely to the mill main casting for lifting vices etc on and off, then just left suspended in mid air, but swung out of the way.
John