Hi as Stiltz said, ask around
especially where you ride now.
sadly I'm new to riding so don't know many people and am a bit too far from Welwyn to help. But i'm sure if you popped in personally and offered to work for free as a tester to perhaps help your application for a job maybe they'd consider that as a good footing.
I'm sure there are lots of schools around that could help and perhaps you would meet someone willing to share for work only, you never know!
Good luck with your search!