Theyre expensive
Sorry about my english, but I will try my best... jeje
Unfortunately, british schools in Madrid are expensive, theyre private. My daughter estudied for three years in Orgaz Nursery School (near to Francaise Liceo) but its only until Year 1, after that you have to look for Primary school, this school is really good, we was really happy, but... expensive, we made an economic effort but at the end we have to change our girl to a Bilingual State-subsidised school, I have to say theyre not the same, english level is not enough.
So, british schools are private and expensive... the bad thing is only rich people can afford them. Any way some of them are more posh than others. I think Hastings is not too much posh than kings college for example.
If you find a british school no posh, no expensive... please let me know!!! jejeje Good luck!