He accepted payment, then presented the copyright material license to be signed. As I was in need of all the facts, I asked for a copy of the signed document, to which he said a signature wasn't essential - he still had copyright.
He has emailed a "copy" which states acknowledgement of receipt of £350, but no signature (just a scribbled note "reference copy, 10/11/14").
We are pretty sure that there wasn't a verbal request, as we would not have agreed - particularly as we hadn't begun any PR work, of even a blog at that time.
His invoice, dated 10/11/14 demands £1970 within a month, & to remove all works.