British acts continue to dominate the iTunes listings this week, with Ed Sheeran's Shape Of You - No.1 in 68 territories on the day of release a fortnight ago - still outpacing everything in 33 countries, while Adele's 61-week-old third album 25 demonstrates both its own strength and the absence of a blockbusting new rival by gravitating back to the summit in 23 countries.

iTunes rankings are, of course, unofficial and based 100% on downloads but, in the real world, ...