I can stand by Barclays bank.
Very top tier customer support, security everything I enjoy the service. They have top tier encryption with yoru online banking and just brilliant in all ways.
If it's your very First online purchase you will be EMAILED to give permission for it.
After that one time, you click 'it's me' or whatever the link is and then you own it.
the form of card barclays gives you is
visa as opposed to
mastercard and with visa you have no limitation gambling vs 'normal' buying. Very free very straightforward just a great bank for me.
I would suggest against using paypal for this as paypal is basically an unnecessary middleman who can somehow screw you over idk i get paranoid with paypal and have even deposited £24 abnd it wont le tme take it out... what a filthy site wont even let you access it with a VPN even once. I turned the vpn off and now it thinks im hacking myself idiotic paypal im fe dup with it entirely the customer support is nonexistent the support forum is literally dead and users helping other users no staff input at all.
I used vpn not to remain anonymous but because if hacker is looking in my computer they can't keylog while the type of vpn i use is active i pay subscription for it (i dont use when i access cc i use real ip so it's really not to remain anonymous it's for real security).
Barclays is just very good bank, if your issue is due to mastercard then note that barclays card is visa which doesn't require further authorisation for gambling purchases full freedom.