Did you know that from the 8th June 2015 you can tear-up and throw away the paper counterpart of your driving licence?
Yes, it was going to be from January, but now put back to June to allow businesses like car rental firms time to develop robust systems that allow them to verify your eligibility to drive their car (ie. how many points do you have!!)
But hang on to your plastic photocard, that will still be needed.
See the DVLA announcement at Driving licence changes