Batters - from what I've seen so far it's not so much going to be a case of "no school knows if you have applied to others", but of applying to the LEA for a primary place in general, rather than for particular schools.
There's a huge difference between our two nearest primary schools in terms of style. One is large (400+ pupils), urban, and has classes of 60 (albeit with 2 teachers/class), the other is rural, has only about 100 pupils, and mixed age classes.
Although we're about 20 metres outside of the catchment area of the smaller school I think it would suit ds much better, as it's a lot closer to the environment he is thriving in now at his small, rural nursery and they seem better equipped to cope with a mix of abilities in the same group.
DS is a start of September baby so will be the oldest in his year anyway, and according to his nursery is well ahead of his chronological age too (they've just put him up to the pre-school group early so he'll have over 2 years of that before he even starts reception). I'm simply not convinced that a class of 60 - some of whom will be almost a year younger, which (anecdotally, but I believe it) often have all but a few who need extra help being taught together would be the environment he would do best in.
I'm already worried that over 2 years of pre-school could mean he isn't challenged enough towards the end of that, and I really don't want his first experiences of school to be that he's bored by it.
So it's not so much a case of wanting the "best" school (on raw results last year there's not a lot between them and actually the larger schools results improved while the smaller schools results dropped slightly, and it also has a slightly higher value-added score) but of wanting the school which would allow ds to do his best.
As Soupdragon says, it means our choices other than accepting a school which I don't believe will particularly suit him, boil down to moving, or paying to go private. Can't really afford to do either.