LIC - There is no such thing as a PEL anymore, the Licensing Act 2003 stopped all that. If your friend did not 'tick the box' for licensable activities then I believe he will be acting unlawfully and would be liable to a huge fine or even a 6 month prison sentence. If he did then the 'Premises License' will show that permission and all should be fine. There are others here who know far better than I though so I could be slightly out. Basically if it's not on the 'Premises Licence' then it's not allowed.
John Barden