Having trouble with "faster payments"

So I’ve entered a trade buying BTC and I’ve only been sent the sort code and account number of the person I’m trading with. But all my banking apps also ask for a first and second name for the payment to be sent. Has anyone else encountered this problem?
Thanks!

Hi. I’m not familiar with Faster Payments but a quick search led me to this article: http://www.fasterpayments.org.uk/press-release/new-name-check-safeguard-payments-revealed-october-2018.

So I’d advise you to open mediation in order to talk with the other party.