When requesting a chargeback with my bank is it a good idea to mention the payment was for cryptocurrency? I ask because most banks have a very negative attitude towards Bitcoin.
EDIT: Looks like chargebacks are not possible from the UK for bank transfers, only credit cards.
I really don't think that is any of their business. It was your money.
And you may be paying the bank a fee, I don't know how yours will work.
The transaction was for 'goods not received',
try leaving it at that.