British Primary school for UK children in Prg- personnal reccommendation?

Hi, we are a Czech/British family considering moving to Prague. Our son (4)started reception and as he is not bilingual we would like him to continue 'british' education in Prague. There seem to be several british schools in Prague but as we unfortunatelly haven't got time to visit some of them
it is not easy to choose which one might offer the high standard. Does anyone have personnal experiences/ reccommendation? It would be highly appreciated! We also have a 2-year-old girl, who will hopefully be attending same school as her bigger brother.
Thanks for any advise!
Lada