In reply to Tigger:
> I've been keepong my eye on that place but they've generally been after high qualified folk. RR might provide something though...
Drop them a mail. I sponsor work at these places and while most of them will go on about the PhDs they have working on the projects in the background are some very handy fitters doing the machining and fabrication for trials.
Similarly you could drop University of Sheffield materials or engineering departments a mail.
I also know someone who works in the DT workshop at local private school - doing the prep work, teaching kids how to use the machines. He's from a food tech fitter background.