Paralegal / legal assistance

We only require someone to make our letters official by inserting onto their headed paper. mainly minor disputes, with BG, BT, or other minor matters for which we want to give the impression of being protected and that our legal adviser has responded rather than us. Generally our letters are done by ourselves, all we require is someone to put it into the right format.... some kind of mussel , can you help? we are happy to pay 10£ per letter or emails exchanged with whoever. You must be a paralegal, someone who could be a legal adviser rather than solicitor