Trouble logging on

Can’t log on to the Mobile Banking app or Online Business Banking? We’ve got tips to get you up and running.

Forgotten log on details

To log on to our Business Banking Mobile app or Online Banking, you’ll need your:

  • business personal ID
  • security number


Forgotten your log on details? Here’s how you can reset them.

Forgotten your business personal ID

You can find this by visiting  forgotten your personal ID.

You’ll need either:

  • your valid debit or credit card
  • your account number and sort code, which you can find on your statements

Forgotten your security number

You can reset it on our forgotten details page or in our app.

You’ll need:

  • your business personal ID
  • your mobile number, so we can send a One Time Passcode (OTP)


Resetting your security number in our Business Banking Mobile app? See our step-by-step guide.

Problems using the Mobile Business Banking app

  • Try fully closing the app if it’s showing an error.
  • Android: Tap ‘Settings’, then ‘Apps, Applications or Manage apps’, then search for ‘Santander Business Banking’, then tap ‘Force Stop’.
  • iOS: Swipe up from the bottom of your phone screen when it’s unlocked. Then swipe up on the Santander Business Banking app.
  • Make sure your phone is updated to the latest operating system.
  • Check that you’re using the latest version of our app. You can update the app yourself within the App Store or Google Play Store.

Problems using Online Banking

  • Make sure you're using an up-to-date internet browser such as Microsoft Edge or Google Chrome.
  • Try using a different device or a different internet connection (Wi-Fi or data).
  • You may need to

How do I sign up for Mobile or Online Banking?

To sign up for Mobile or Online Banking, call us on 0330 123 9860. If you already use Online Banking you can download our Mobile Business Banking app and log on with your usual details.

Do your banking online

Ways for you to manage your money without leaving home

Trouble logging on 

You can reset your details if you already have Online Business Banking 

Santander UK plc. Registered Office: 2 Triton Square, Regent's Place, London, NW1 3AN, United Kingdom. Registered Number 2294747. Registered in England and Wales. www.santander.co.uk. Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Our Financial Services Register number is 106054. You can check this on the Financial Services Register by visiting the FCA’s website www.fca.org.uk/register. Santander and the flame logo are registered trademarks.