General JB Apps and deleting cache

Hello Chaps

I hooked my iPad mini up to the my MBP to do a backup and looked at the usage bar, which said I was using about 5gb of memory under 'other'.
I'm thinking this is from a few of my JB apps such as XBMC cache?

Is there a way of finding out more details about the 'other' data consumption i.e. Where this data is being used?
I've tried the stock option (settings, general, usage) but this doesn't include JB items.


Appreciate any input. Cheers