We're looking at secondary school options for DS. We live in a less-than-salubrious pocket of north London, and not happy with the state school options. One option is Northbridge House Canonbury. Wondering if anyone knows whether it's mainly extremely wealthy Highbury kids who attend, or is there a mix with some children coming from less posh areas of London? Don't want DS to constantly feel he's the poor relative if we send him there.