OK now I'm confused!

But thanks very much for your replies, much appreciated 
Our new house is likely to be Eastbourne or Hastings, so that's East Sussex County Council.
(Actually would love to live in one of the villages in between, but can't afford it - yet!)
I looked at the websites last night. East Sussex CC publishes a PDF on school admissions which includes how many places were available at each school, and how many people put it as their preference first time round, which makes interesting reading.
Also, under admissions criteria, it includes "Children living within a pre-defined community area." and "Children living outside the pre-defined community area."
I wonder if they're referring to a catchment area or the council area?
I can't link to the document, the one they had up there last night was "2010/2011" and it's disappeared this morning! (I have it downloaded).
Hopefully the right one will be there soon!