Hello,
A friend of mine is looking for a intensive (~20/30 x 45 minutes a week) language course in the English speaking country (preferably UK and Ireland or Malta, definitely not US/Canada, etc) to go from ~B2 to C1/C2.

Does any of you know a 'good' school? Or maybe some criteria for choosing one - what key points to look at (some form of accreditation, etc?)

Thanks