I taxed my car this afternoon using the DVLA site. After I had finished, I checked my bank account and was horrified to note that the payment had put me £20 in the red. I immediately (max 7 mins) transferred some money by internet banking from my savings account to rectify the matter and I'm just wondering whether I'll now get a letter and a fine for the 7 minute unauthorised overdraft of £20.
I know it used to be the case that, in a banking day, credits were applied before debits but I'm not sure whether this is still the case today.