it always included :
'the policyholder may also drive other peoples vehicles[ with permission] with third party only cover'[/size]
Now it appears, this is not automatic on 'fully comp' and you may find that helpful drive home for your friend
[who's had a few], in his car means you have no insurance.
Likewise your helpful delivery of your mates car for its' MOT ... an easy trap to fall into, as of course no-one tells you this cover has been dropped when you renew...
Worth checking......