Sukhjeevan,
There is an official NHS route to techie-researchy areas, see:
http://www.nhscareers.nhs.uk/nhs-knowledge_base/data/4868.html or
www.ipem.ac.uk and look at the "Grade A Training" stuff.
It's just for people with engineering or physics degrees, and is massively over-subscribed. It takes 2½ years to get through and there's no guarentee of a job at the end of it, but you will have done an MSc, written 4 80-page portfolios and you will have to explain your job in ridiculous length to anyone you meet, but you do get paid
Hence (I believe) stems the root of Louis' and Geoff's Cynicism...
Anyway - the course has a yearly closing date of February, so if you're interested, go for it!
Good Luck,
David
(Current Grade A Slave, erm sorry, I mean Trainee)