Possibly try applying for one of these MSc scholarships being advertised by RAeS/RAEng to do an appropriate MSc - that should re-set your skills and equip you back into the game? There's a thread I started here that gives you the links:-
http://www.pprune.org/engineers-tech...-want-msc.html
If you happen to be a woman, there's a rather juicy scholarship scheme at Brunel you could look at as well:-
http://www.brunel.ac.uk/sed/women-in-engineering
And quite a few other schemes out there. There's a big push on at the moment to get people like you masters-level qualified and back into the right positions in the industry.
I'd be happy to look at your CV if you want. boffin (at) engineer (dot) com will get me.
G