NatWest Business Contact Us page will provide you with all the numbers you require to get in touch If you need to speak to us, you can do this over the phone. Welcome to NatWest. Our extensive personal banking products including bank accounts, mortgages, credit cards, loans and more. Visit today to find out more. You'll need your customer number every time you log in to Online Banking or call telephone banking, and it may also be used to pre-fill future account. Support Centre Home Our Services Search our FAQ's Help with mobile banking Help with online banking Find your nearest branch. View the balance of your accounts. Bank on the phone with Telephone banking. Existing Customers Home insurance claims Life insurance claims Car insurance claims. Existing customers My Rewards Change your NatWest bank account Manage your bank account Manage your Direct Debits Accessible debit diamond cab. Credit cards New Customers Find a credit card Reward credit card Clear Rate Platinum credit card Reward Black credit card Student credit card.