For those living off campus and concerned with theft, I have a temporary lock that can be attached to the door of your room without damaging the door itself.

It's a combination lock that basically blocks access to the doorknob so that the door can't be opened.

Take a look for yourself!
templock.co.uk/shop

Drop me an email (A.W.Lam@warwick.ac.uk) if you're interested! Price to be discussed