I have had many such "enquiries" over the years. I always advise that there's no need to work for nowt just to get a foot in the door, so to speak. Not only does the novelty very soon wear off, but techs just devalue themselves and end up getting treated like [censored]. In short, it's not a good place to be.
Far better for them just to lodge details with the well-known agencies. The agents will complain about "only taking folk with experience" and all the rest, but sooner or later a booking will turn up. It may be "just" PM (or some such thing) at first, but from that point it's up to the tech, is it not?
My approach is to offer the best advice I can (it doesn't cost anything after all), and then let the guys get on with it. If they don't want to follow it up, then that's up to them. No "hand holding" here, I'm afraid.
What I fail to understand with that one, Darth, is why anyone who doesn't have to would want
to work in the UK?
Meanwhile ... there is
such a thing as working for nowt (I know, 'coz I've done it often enough). But not for "work experience", I'll admit (that is, it was done deliberately, with "eyes open" and under no illusions about free lunches, cups of coffee ... or anything else except sincere gratitude). And not for the NHS either. And I have yet to find a Hospital League of Friends willing to take me on!