There ARE decent handheld devices that don't have cameras. Yes they aren't Android, but Android isn't the be all end all.
Buying a phone you KNOW isn't allowed at your workplace is just ludicrous. Then to top it off, people are egging the guy on by giving him ways to remove the camera and in doing so remove the warranty! It's just crazy... you blindly buy a 400 quid phone then immediately invalidate any warranty for something you knew before u bought it? What if it packs up after 2 weeks?
There are alternative devices that don't have cameras....yeah,they may not be the Hero, but due to your circumstances you may have to compromise....but invalidating a warranty on an expensive phone after a few days SHOULDN'T even be a remotely sensible option.