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Online Banking

How do I update my address, email and phone number for my credit card online?

Log in to Online Banking and select Manage account on the Online Banking Overview to view your Credit Card Overview.


On the Credit Card Overview, select Update address, email and phone number from the Manage your account menu and update your new details.  


For more information or help on updating your personal details, watch ‘Managing your Credit Card’ demo video.

Version History
Revision #
4 of 5
Last update:
‎09-09-2016 01:49 PM
Updated by:
Hi. I've changed my mobile number and moved house. When I log in it asks for a one time activation code to be sent to a phone number. I can't log in without this and can't change my number either. Any ideas? Thanks

Hi @Chosies, if the details we have for both your mobile number and home address are incorrect you will need to give us a call so we can discuss this further and get a temporary security number to you. You can find a list of our department's contact numbers here:


I am surprised that I had to change my email address separately for each account. Still, at least I was able to find instructions here. Thanks.

I need a new security number please
John shellswell

Hi @Sharron1, please send a private message with your full name, DOB, postcode and mobile number to @CET so we can send you a temporary security number (TSN). 


Please note: don't include the @ symbol when putting in the contact details via private message, just CET.

For details like your DOB, postcode and phone number, we ask for you to format it with additional spaces, i.e. A B 1 2 C D, 2 4 1 0 2 0 1 6 and 0 7 1 2 3 4 5 6 7 8 9 otherwise the information is removed by the system.


How do I change my email address

Hi jana

Hello @michaelcjames

If you have access to online banking then please follow the instructions listed above within this FAQ to update your email address. If you don't have access to online banking then please give our team a call on 0345 300 4278 anytime and my colleagues will update your details.


HI - how do I update my mobile number please.  I no longer have access to my previous mobile and as I'm currently abroad I don't want to call the UK.


If you're able to log in online then you can update here. If you're currently locked out or your device is recognised then the only way that we can update your details is by giving us a call. We have an overseas number available for our Online Helpdesk which is +441412787386, and available 24/7.

Alternatively we can arrange to reset your details by sending a code in the post which will allow you to continue your log in. This can take between 3-5 business days to arrive and will be valid for 30. Once received you can log in and update your contact number. If you would rather this option then please send a private message to our @CET account including your full name, DOB and postcode (in the same format as below). We can also be contact on Twitter (@tescobankhelp) and Facebook (Tesco Bank), if you again get in touch privately with your details we'll send a code in the post.

A B 1 2 C D 
1 0 0 7 2 0 1 7