@TizerorFizz
The PAN is 270 children at The Cherwell. That is a lot of places. Their admissions criteria is fairly standard. Catchment is operated as a final decider and that’s normal for Oxfordshire. As it is in Bucks where I live. However they get more applicants than places so inevitably people are disappointed.
The thing is, the North Oxford kids probably can get into Cherwell. Just because the Swan catchment is broad, doesn't mean that the kids applying to it (in order to get a reasonable place) won't be predominantly from one side of the catchment.
The temporary buildings for the Swan the first year it opened, were on the Cherwell school site.
I think some of the way the Swan was set up was deliberately setting out to be a contrast to other schools available. (And it and Cherwell are part of the same MAT) So, Cherwell is non-uniform, Swan will have a uniform, etc etc.
If there are enough school places for children to have real choices, having a variety of school approaches makes loads of sense. When places are still tight this can cause problems rather than help, I suspect.
In terms of long-term planning, I think the timing of Oxfordshire changing from first/middle/senior school to primary/secondary roughly coincided with what turned out to be the low point in birth rates some 18-20 years ago. So they reduced school sites (eg Milham Ford sold to Oxford Brookes) and, probably like other areas, have been slow to recognise the need to expand and play catchup.