I have just set up a Direct Debit to pay a bill to a telecomms company. The form asked for the name(s) of the account holders. But then at the bottom of the form there was a tick box which you had to tick which said "I confirm I am the only person allowed to set up a Direct Debit to this account" The account is in fact a joint account. It said that if it was a joint account - you had to get a form and apply by post. Why? I have set up any number of Direct Debits to a joint account before.
Bob