03-04-2019 08:09 AM
It can get taken as soon as the billing date arrives (i.e.12:01am) as it's an automated process.
Sorry I can't give you an exact time.
03-04-2019 03:36 PM
If by DD, normally about 10 working days after your bill is posted online. That is part of the Direct Debit Guarantee to allow notice to be given in the event of any change in amount etc.