this image reminds of a school in sussex but for the life of me i cant remeber what its called only that it was a Christian School. I think it was Prince Harry was to undertake his education there, but becasue of the security risk he wasn't sent there.
You may be thinking of Christ's Hospital School. I have looked at that, Roedean and a number of Oxford colleges, many of which are similar but not exactly the same. I am sure it is a Public School or University College though.