ks - from memory ds is only 5 so we're talking infants I think. Here goes ...(sorry if I offend anyone)
Surrenden area - Patcham's not good I'm afraid, I don't know personally but reputation ain't great. The only 2 schools to go for in that area are Balfour and Downs - I know people at both who love it.
Hove Park Area -
St Andrews - excellent (bit cramped but being rebuilt), down toward seafront so it'd be a drive, but lots of parents in that area use it .
Goldstone School - small classes , excellent head. Was bad but is improving daily . May be moving its location but don't know.
Westdene - very good
West Blatchington - absolute NO
Stanford School is good as is Summerhill but they're a bit further towards Brighton - not exactly sure of their catchment area.
Is Windlesham full then ? Did you see Mowden's prospectus? Deepdene is great but only infants at present but may be changing ...might be worth an ask ?
Do you have a Catholic bone in your body, cos they've got some good ones round here
As away for anything else MABS