prh47bridge you are right that the majority of VA school land and buildings belong to the church as this historically was the only way governments could expand compulsory schooling and raise the school leaving age quickly enough. There is an issue with expanding their size as well because they have to pay VAT on building work so it is more expensive for council and church, especially with 20% VAT. But Blair's expansion of minority faith voluntary aided schools (Muslim, Sikh) did involve land owned by the LA - the groups complained they did not have the wealth and central organisation of RC or CofE dioceses. The newest VA Catholic school is probably in Richmond - a new Catholic secondary and primary is about to open. The council bought the land and building or £9 million specifically so that it could lease it to the diocese. Although there was uncertainty due to a judicial review - and new schools take time to become popular - on opening it will be undersubscribed (many of the secondary places had to be allocated - to non-Catholics), while the community primaries and converter secondaries are popping at the seams.
'only around half of VC secondary schools are CofE' - because they no longer have any religious denomination (or some may be ex grammars turned comprehensive like Rutlish School). The list of them is www.education.gov.uk/cgi-bin/schools/performance/group.pl?qtype=NAT&superview=sec&view=cqs&set=2&sort=&ord=&tab=35&no=999.
'Whilst it is true that the sponsor of a convertor academy may be religious in character they are not permitted to introduce selection by faith.' - No, but it might put off children of other faiths from applying thus accelerating segregation. A Muslim, Jewish, Sikh or evangelical Christian sponsor - as the only sponsor - would set a specific ethos and children would be attracted or put off accordingly.
'naming local VA schools as feeders' - if the school didn't have feeders pre-academy and if those feeders are taking children from a specific catchment and denying local children a place, in an otherwise multi-faith community, it is wrong. This was the proposal at Tudor Grange in Birmingham:
www.bbc.co.uk/news/uk-england-birmingham-21335825