Did Tesco randomly send you a new credit card with a different number?

[KatyMac]

If so in addition to changing your PayPal, phone, direct debit; remember to change your tesco pay+

That way you won't end up standing at the petrol station waiting for your husband to bring the new card!

Ah I've been there, with Tesco credit too actually! So irritating especially when they don't actually divulge what the "security concern" actually was.