Which are the best International schools in Madrid for British expats?

Are you a parent with children at school in Madrid? Can you offer advice on the best international schools in Madrid for the children of British and American expats? We are putting together a schools guide for expats moving to Madrid and it would be really helpful to get advice from expats living in Madrid. We are listing the following schools 

International College Spain
Hastings School
City Country School
King's College British School of Madrid
American School of Madrid
British Council School
International School of Madrid
Runnymede College
Queen Elizabeth School
St Ann's School

Are there any schools we are missing?

If you have or have had a child at one of these schools please take a moment to write a review below on the school.

Thanks,