Changing your details

You can change your mobile number in our Mobile Banking app or in Online Banking. Please note, we may send you SMS messages (for example, One Time Passcodes (OTPs) or Account alerts). We can only guarantee delivery to customers who are in the UK with a UK registered number (+44). 

For Mobile: 

• Tap ‘Menu’
• Tap on ‘My details’
• Follow the steps on the screen

For Online Banking:

• Log on to Online Banking
• Go to the ‘My details & settings’ tab.
• Click ‘Change personal details’ in the left-hand menu.
• Choose ‘Change contact details’
• Follow the steps on the screen

If you’re using Online Banking to update your number, you’ll need to update the mobile number for account alerts separately. To do this simply: 

• log on to Online Banking
• click ‘Account services’
• Choose ‘Account alerts’ in the left-hand menu and update your number.

Sign up for Mobile and Online Banking

Not signed up? Here’s what you need to get online. 

In our branches 

You can also change your contact details by visiting one of our branches with your debit or credit card. You’ll also need proof of your ID with a signature such as a valid passport or full UK driving licence.

For Mobile: 

• tap ‘Menu’
• tap on ‘My details’
• tap your address
• follow the steps on the screen.
   

You’ll need to contact us to change your address if you’re moving:

• to a home with a shared post box
• outside the UK
• to a BFPO (British Forces Post Office) address
• and you have Power of Attorney, in trust or children’s accounts.
   

If you’re changing your address for a mortgage or your insurance, you’ll need to contact us. If you follow the steps in the Mobile Banking app, it will explain what you need to do.

For Online Banking:

If you already live in the UK and are moving to another UK address, you can change your address online.

• Log on to Online Banking
• Go to the ‘My details & settings’ tab.
• Click ‘Change personal details’ in the left-hand menu.
• Choose ‘Change address’.
• Add your new address and click ‘Continue’.
• We’ll send an OTP to your registered mobile number.
• Enter your Security Number and OTP.
• Click ‘Confirm’ to change your address. 

Please bear in mind that you cannot change your address online for certain products such as your mortgage and insurance.

Sign up for Online Banking

Not signed up for Online Banking? Read our Online Banking page to learn how

Joint accounts 

This change will only update your own address details. All other account holders may need to update their address separately. Until they notify us, all their correspondence including cards and statements, will be sent to their previous address. 

In branch  

You can also change your address by visiting your local branch with your debit or credit card. You’ll also need proof of your ID with a signature such as a valid passport or full UK driving licence.

For Mobile:

• Tap ‘Menu’
• Tap on ‘My details’
• Follow the steps on the screen 

For Online Banking:

• Log on to Online Banking
• Go to the ‘My details & settings’ tab.
• Click ‘Change personal details’ in the left-hand menu.
• Choose ‘Change contact details’.
• Add your new email address and click ‘Continue’.
• We’ll send an OTP to your registered mobile number.
• Enter your Security Number and OTP.
• Click ‘Confirm’ to change your address. 

If you’d like more information on how to change your personal details, please visit our contact us page.

Changing your account alerts 

You’ll need to update the email address for account alerts separately. To do this, simply: 

• Log on to Online Banking
• Click ‘Account Services’
• Choose ‘Account alerts’ in the left-hand menu and update your email address. 

In our branches 

You can also change your contact details by visiting your local branch. You’ll need to bring your account’s debit or credit card and proof of ID with a signature such as a passport or driving licence.

If you've changed your name, you'll need to visit a branch with some personal ID (PDF - 54 KB) and proof of account ownership. You’ll also need to provide relevant supporting documents to prove this. You can provide one of the following documents:
 

• Marriage or civil partnership certificate
• Decree absolute
• Enrolled Deed Poll or Scottish Registry
• Unenrolled deed poll plus 1 ID document in your new name (e.g. passport or driving licence)
• Statutory declaration
• Final court order document
• Adoption certificate

Your date of birth may be stored incorrectly on our records and we may need you to update it. We might let you know this when you’re applying for a new product, for example.

To update your date of birth, please visit a Santander branch. You'll need to provide proof of account ownership and have some personal ID (PDF - 54 KB) with you.

We may have asked you to complete a Change of Details form (PDF - 364 KB) after opening a new account.

This is because, some details from your application do not match those we have for you as an existing customer. We need you to provide us with some details and ID, so that we can send you new Online, Mobile or Telephone Banking details.

If you have any, you’ll be able to use your existing details to see your new product, after you send the information we need.

We need you to:
1. Fill in and return a change of details form (PDF - 364 KB) to the address listed below. 
2. Photocopy one item of ID from list 1 and one from list 2 (PDF - 70 KB), from the list of ID we can accept. Please provide clear black and white photocopies, and don’t send us originals. 
3. When you send these to us, include a copy of the email you received, or write your account number and sort code on each document.
Please send us your completed change of details form and photocopied ID documents back to us at: 

Santander Operations
Sunderland
SR43 4FP