Our valued sponsor

VCC providers for UK

I highly doubt you can assign anything to prepaid cards, they have no name or address behind them, this is a so called marketing trick.
There are plenty of VCC providers, for bitcoins it will be complicated because WaiveCrest (they used to supply crypto worlds with prepaid card) were shut down by VISA. I had a visa directly with the mother company WaiveCrest and I have received an email that It has been terminated, same happened with Wirex (e-coin), Spectrocard, Xapo, etc etc similar websites all based around WaiveCrest cards.
 
Yea, Wavecrest getting suspended killed pretty much all of the crypto cards, at least in EU. Spectro and a few others claim that they'll be back in business by the end of Q2 but eh.. will see. Can't really comment on the address as I've never worked in the backend of a bank issuing these cards.