I see that others have replied, and I tend to agree!
for DS it was mainly around the Oxbridge application. He needed a strong subject, about which he is passionate about, to talk about in the ps and then in the interview.
for the other ucas applications he faffed a bit, but came back to Oxford ps/interview in the end.
He looked, and may still change to HPE (history. Politics, economics) at UCL, PPL at Warwick (friend’s daughter has firmed this so we’ll get the skinny!) or something more mixed at UCL (e.g. involving MFL)
but in the end it’s because history is, and has always been, his favourite subject. He would also like to go into the civil service (MI6 or 5) or one of the political quangos. History opens the doors to a lot of careers.
All the best to those taking exams today. Good luck to you all!