This is what the letter said
'Universal credit will be paid in arrears as a single monthly payment, meaning there will be a five week gap in receiving your benefits when you move over to Universal Credit. Therefore we strongly advise all of our customers to over pay their rent by a small amount each month. This means that when you switch to universal credit you will be prepared for the 5 week gap in receiving your universal credit and your rent account won't fall into arrears. '
So basically then, people will be in arrears right from the off unless they can over pay beforehand. A lot of people I know, won't be able to afford to overpay.
Also whilst we are on the subject, can I just ask, if tax credits is going to be paid with the HB as one big payment ?? What about child benefit ??