Does the £20 buffer apply to Direct Debits?

Ah okay my balance on Friday was high enough to cover it, thanks for clearing this up.

I wonder if these should also be checked on Sunday prior to any direct debits coming out on the Monday?

I can see this catching more people out in the future as it’s quite easy to spend money over the weekend that would bring your balance below what is required on Monday. Although when more overdrafts are rolled out it’ll be less of an issue.