So, we changed to a pre payment meter when H was made redundant. We kept up the monthly DD as long as we could but when the redundancy ran out and all we had was one NMW 0 hours contract job between us, we changed to pre payment. He got paid weekly, tax credits and CB were paid weekly and his income wasnt guaranteed, so we decided to do it as making sure we had enough at the end of the month was tough.
No charge for it, we are happy for you to change blah blah. Because of where we were in our annual cycle we had a debt several hundred £. We have high use as there are 7 of us here but over 12 months it usually averages out by over paying in the summer (this you know..). We were paying off the debt at £20 a week.
So, he finally got the job he has wanted all this time, set hours, salary, regular (and higher) pay, so I rang them about going back on to DD. We still owe them but no where near as much as we did when we were still on DD.
They will charge us £100 to change both meters and if we fail the credit check then we will have to pay £300 deposit (there is a chance we will as we had signed the finance on a new to us car 10 days before he was made redundant with no notice and had to juggle payments to everything for a while to avoid having to hand the car back and still owe ££ thanks to depreciation). If you are not sure that you will pass the credit check (as we are not) then you risk it affecting your rating by them performing the check and you failing, or you think "better not risk it" and stay on prepayment.
Now whilst I can see that they dont want people coming off prepay and then not paying their DD, it seems that they make it very very easy to go from DD to prepayment but v v hard to go back the other way. You pay a higher rate for your energy based purely on the fact that it is prepayment, they charge 50p each time you use the emergency on the electric (not sure on the gas, probably the same) and it seems to me that they dont want us to pay by DD as they will make less money from us.
And I was not warned of any of this when we switched, if I had then I would have begged borrowed or stolen to keep the DD, it just seemed an easier way to do it and we were prepared to take the hit temporarily until we were settled again.