Hi all,
You dont say wether you want it for home or abroad. No knowledge of O2, just poor service with their mobile phone services.
Like Digger I use a Bank of Ireland Mastercard issued by The Post Office. I have preloaded it in the past without issue (and I checked with the card issuer first). It also has the advantage of being commision free in the EU.
If you are thinking of preloading a card for trips abroad, I use one issued by
www.mytravelcash.com It is free and has no monthly fee, earns cashback, gives free withdrawals at ATMs, widely accepted, but not recommended for car hire or hotel prebooking.
The biggest advantage that I carry one for is that it spreads my risk when travelling. I then have access to more than one card, and if stolen it limits my potential losses without reducing my accessibility to money.
Davy