I realise this topic has been covered in a similar thread about leylandi
trees, but I was wondering what I could do about the trees that are in the
churchyard behind my garden, I would like them to be trimmed a bit so that
my garden gets a lot more sunlight in the next year.

The prob is that it is a cemetary, is there still a legal height for these
sorts of places to have the trees growing?

I dont want the trees chopped down, just trimmed a bit.