I believe I know the answer to this question. However some confusion has been brought up since open evening last night at Oxted Secondary school (Surrey) The head in her talk said that if you did not live in Surrey you HAD to apply to Surrey to get into the school, not your own county.
As I understand it (and how it was with my older 3) you apply to your home county only.
I obviously now have friends worried about what to do.