I know about as much about the UK as you probably know about Pennsylvania. (There's a good chance you might know more about PA too. lol) BUT I'm going to give you places so you can look up what church is there to find a denomination that doesn't gossip about others.
I know that about that denomination, because we picked our pastor from there, and we aren't into hurting people or gossiping.
The pastor's name is Liam Goligher. (Full name is William, like you can probably guess.) He lived in "Richmond, London," which I can only guess is a neighborhood in London. He said he was working on Duke Street. I'm guessing that means he worked in a church on that street. So, of you can find out the equivalent of "Reformed Presbyterian" on that street, you can find a denomination which might also have a church in your town. I'd be able to give you more, except we call ourselves "The Presbyterian Church in America," which absolutely destroys the idea that it would be called that in your country. lol
But I absolutely know it's one denomination that has roots in your country and will NOT gossip or exploit people. Oh, of course, it's also got the basic Christian tenants going for it, and teaches straight from the Bible - verse-by-verse, beginning-to-end, so there is no time to preach some political or off-topic agenda.