So after that what are you all going to do? Move again and rent kn the catchment for a top secondary school?
Have you ever considered the premium you are paying to either rent or buy in a catchment area for a top free primary school? The cost per sqm in battersea (sorry i am from the continent) is £7,000 per sqm as of last august (last time i checked). Which makes the premium you are willing to pay about the same price (or slightly more) of a "not posh" private school.
My husband and i cant afford to have our children school careers dictating where we live. Stamp duty, cost of moving, stress of moving, ... Thats not for us. My husband has a very demanding job and i am working hard at trying to find a creative way of going back to work. We have no time to waste in this as i am sure a lot of you are too. So now we are stuck in Battersea and we are v happy to be here. No more moving unless it is abroad
Consider this before you put yourself under this level of stress and more importantly do your math snd your homework instead of talking about rumours, generalusations and misguided views.