We are in London (I mention it as I have no clue if the rules are different outside of England)
Suppose you apply to six state secondary schools, and don't get it any of those.
Suppose there are 3 undersubscribed state schools within a commutable distance, none of which you had applied to.
Must the council give you a place in the closest school? Or can they give you any of the 3?
If the council gives you a place in one of the undersubscribed schools, can you say: "Thank you, but I'd actually rather go to that other undersubscribed school" ?
Or is the only option to accept the place you were given, ask for a transfer, and possibly do a couple of weeks in the school chosen by the council before the child manages to transfer?
Of course there's a strong argument to be made to use the 6th option for the "least worst" among the undersubscribed schools, but that must be weighted against the odds of getting into a school you may like more.
Thanks!