*BertrandRussell Well yes, of course churches do want to spread the faith which they represent. But organisatins with charitable status are concerned to promote what they believe in. I am not sure I see a problem with that.
redstrawberry10
Re
being established I am not sure what benefits being establed actually has? I am not sure that state schools have mandatory worship anymore. It's always been something children could opt out of, even when I was a kid there was a Jewish child who never had to go to assembly. And the modern assemblies are not like the ones we had as kids (and I went to a regular state school. I don't know what yoiu mean about public money for essentially private schools, church schools are not private schools. There is no payment for them. Peronally, I would rather schools did not discriminate on who could go based on who goes to the local church. but if you think about it schools do discriminate on where people live, and in the old days (grammar schools) on who was more clever or more academic!
Re I don't dispute that. that's plain as day. While it's not my cup of tea, it's not my place to stand in between them and their god. I just don't want me, my tax money or my non-discrimination laws to have any part in it.
Thank you for your honesty. I do kind of feel it would be more honest if the church were not part of the establishment but another way of looking at it is that this is the system we have developed as a nation, over 100s of years. If people do/did not want it they would presumably campaign for things to change. Yet they do not do this on any large scale (to my knowledge). Ironically, some in the church woud prefer it as they would see it as better for the church.
The whole' gay' marriage debate may bring things to a head as the church is in a real dilema! Part of the church want to stick to a traditional interpretation of 'marriage' but of course the law says that we have equal marriage. So ironically in this case it is the clergy who suffer because they are not allowed to get married to same sex partners. (which I do not agee with, of course, I would like church leaders to have the same freedom as the rest of the population).
So although you may find it hard we have an established church quiet a few non-religious people seem to like to use the chruch for weddings, fiunerals etc and maybe feel happy to have an established faith, which is frankly pretty liberal generally.
Anyway, of course your views are totally valid and of course your concerns are very real but I can't see how the church could do anything about that other than disestablish and others in society may not want that.
But thanks for sharing your thoughts, it is always good to know what people think, it is easy in church to be in a bit of a bubble and forget how strongly people hold other views. 
Sorry, OP did not mean to de-rail.