mtg23

Hi, I was wondering if you could help me figure this out. I'm a non-vat registered sole trader based in the UK and I've been doing business with a Polish company. I'm about to issue an invoice for book illustrations I've done for this company, and I'm not sure how to deal with any possible taxes involved. Since I do have a certificate of residence, I believe that I just issue a regular non-vat invoice with no taxes on it, and both the netto and brutto quotes are the same - just the exact quote I'm being paid. So basically the same simple type of invoice I'd issue for a UK-based publisher. Is that correct? Do I have to add any other information to the invoice? Thanks so much.