One of my Direct Debit companies sent me a letter saying they haven't received a payment from my current account. What do I do?

When we transfer Direct Debits to your new current account, we send an electronic message to every company you have regular payments with, giving them your new bank details. It's rare, but sometimes Direct Debit companies don't update their records. The simplest way might be to phone the company themselves, check your details with them, and give them your new account details if you need to.