I'm very sorry, I don't know the exact distances involved, but you are right in thinking that the "catchment" for The Charter School has changed recently. Children who were previously excluded from the Dog Kennel Hill area are now included. There was a long thread on here about it last year and I am sure a quick search will bring it to light. It was started by James Barber. For anecdotal purposes I can tell you that my child was number 90 on the Charter waiting list a couple of weeks after the September term started (and, therefore, after the traditional shake down, can't imagine where it would have been at the end of the summer holidays) whereas less than 5 years ago very near neighbours of mine got a place for their children. Do pm me if you want to know my address. It is at the other end of the catchment to Loughborough Junction but it might just help you to ascertain the 2012 radius if you can be bothered to work out the distances.