Thank you both for your responses.

After further research, I agree that the easiest way forward for me is to buy a small, cheap manual mill and convert it to a cnc machine.

I found this on Ebay:

http://www.ebay.co.uk/itm/Proxxon-MF...YAAOSwHjNV-BT2

And here's a conversion:

https://www.youtube.com/watch?v=iVYIXzO6UtI

Couple of questions:

Firstly, does this look like a rig that could cut steel to any degree of success?

Secondly, I know that manual mill can have quite larger backlashs. Will this be an issue in a CNC conversion and how can it be overcome?

Many thanks,

Luke Blades