thanks everyone for your contributions. i agree with you: the UK's popularity makes sense - after all, most royals will learn english as their foreign language, as opposed to french, so if they go abroad for school or university, the UK is an excellent choice. some royals, like martha louise or mabel, moved abroad with their children, so i am sure this was a consideration for them: that their kids would be able to learn english well.
Yes, I suppose living in London can be quite pleasant, central to everything, a major business centre and, of course, it's good to be able to practise the English language a bit in everyday life. Not that that's a problem for Chris O' Neill! It's also an anonymous sort of place, where people mind their own business (and paps are less numerous than they once were.) Interesting too that Edinburgh Uni was a choice for several. Edinburgh a gorgeous city, though often quite cold.
i guess in chris' case it is the other way round - he has business to attend to and it is easier to do so in a city that speaks your language than moving to stockholm.
Edinburgh is indeed a beautiful city - i am sure part of the attraction there is that being a smaller city than london with no paps it is easier for royals to carry a normal life, whilst at the same time offering a relatively large place to live, with good connections abroad. it also has a reputed university.
i am interested to see that naruhito and masako went to oxford only with 3 years of difference between them. surely that was a conversation starter...
out of interest, i checked the royal alumni of cambridge, among whom Dina al-Hussein of Jordan, Margrethe II of Denmark, Sofía, Queen Consort of Spain, Princess Takamado of Japan. interestingly though, oxford seems to be the university of choice in the oxbridge leage, with more royals seemingly choosing it over cambridge. i am no expert in the differences between them but i wonder if maybe oxford is more suited to governmental and social studies that royals would tend to choose. among foreign royals who studied there: Prince Philippe, Duke of Brabant, Dasho Jigyel Ugyen Wangchuk, Prince of Bhutan, Prince Akishino of Japan, El Hassan bin Talal, Princess Aisha of Jordan, Princess Badiya of Jordan and Prince Guillaume of Luxembourg.