I studied Philosophy and English at Bristol University. You can do joint honours (or could) Philo and almost any arts, social science or science subject. I think almost the only joint honours they don't do in it is Philosophy and medicine.
I loved it, and it certainly stood me in good stead when I decided to study law as a post graduate - no one argues with a degree in philosophy .
I would have loved to do PPE at Oxford, but didn't have the confidence in my ability to get through the economics part to apply. I applied for pure Philosophy at Cambridge but got turned down after interview. Send him to look around Bristol, it is a great university.