Case study request - Overseas UK private schools

I am writing a piece for the Daily Telegraph that is looking at public/private schools that have opened branches across the world - Harrow, NLCS, etc and need case studies to discuss their experiences.

Can you get a Harrow education but for cheaper?

I am keen to know more about the prices for UK private schools abroad, who goes there?

I am also keen on British case studies or parents/students who go to these international versions of UK private schools Do you get exactly the same education as you do in the real thing?
Is it locals using it or expats? Is it just for the brand and what do you get?
Let me know if you can help with commentary or being a case study?