Has he not accepted his offers by this time of year?
I guess that depends on what they like and what would make uni life enjoyable?
I have DS1 who was offered both. He went to the offer holders days at Durham which they do in the spring. It involved an overnight stay. He was hoping to love Durham as it was an easier offer but he hated it. He's just spent a very happy first year at Warwick. However he's a not a PPE student which may well make a difference.