Direct Debit is the most popular way to pay Utility Bills. Over 100 million DD's were processed by DD Originators in 2007.
You have complete control over the payment as the utility is obliged to provide you with advance notice of the amount and date of payment. If you are unhappy with the detail of the notice you can instruct your bank not to pay the DD.
With most utilities you you can set up your DD over the phone and they will confirm the details to you in writing.
You are offered full protection by the Direct Debit Scheme Guarantee and your Bank will refund you if a DD on your account is not drawn in accordance with your insrtuction.