How do I top-up my Cashback Card card using a different card?
You can do this in your online account or using your UW app, as follows:
Go to 'View your cashback card'
Click on 'Top up now'
Under 'One-off top-up' you'll see an option to add a new card.
After you have made a one-off top up with the additional card you can select which card you would like to use for your automatic top-up.