I know of someone who lives on Brandlehow Road who didn't get in, because of the sibling issue!
My daughter is in Nursery and we don't yet know whether she will get a Reception place. We are over 500m away. Yikes!
The school built some new classrooms in order to expand the Reception intake from 45 to 60 in 2013 and 2014. The plan was then to revert to 45 in 2015. We are lucky, because I understand they have extended taking in 60 for another year. I'm afraid to say that they simply don't have any more room for expansion after that, so I believe next year the Reception intake will be 45 again.
I think what is happening is the trickle-down effect of the 60 intake, because those now in Year 1 and Reception are likely to have siblings soon to be of nursery age.
Sorry for the bad news and good luck. It's nail-biting stuff.