Thanks for the reply's

Magicniner, the Z axis is driven by a ballscrew and motor

I took the top off the controller, some of the P.C boards are marked Suregrave

I can move the axis around from the menu on the controller so hopefully I can use this
I just need to find some software for creating toolpaths and getting it into the controller
I will have a look at Galaad / Kay as I have used it before and it is reasonably priced for hobby use

There is some light rust on the linear guides, I will strip the machine and see how they clean up

Any other suggestions gratefully recieved