Having had a Tesco joint bank account everything was good. With this card you either have to load lots of cash into it or constantly look at what credit you have. No option for auto top up when the balance gets low.
I had to register my partner into a seperate account because you can't have one jointly apparently. Both of us have had purchases declined because there wasn't enough balance in the accounts.
Through frustration I have taken out a Tesco credit card (perhaps this is what Tesco want) and I have set it up to pay the balance in full each month.
I think this is a very poor replacement.