I mentioned this in another thread
http://www.cableforum.co.uk/board/sh...8&postcount=14 . It would appear that broadband customers in the old Diamond Cable area based on Nottingham have always been charged in arrears for their cable modem service and they are being switched to payment in advance when upgrading to the new speeds. So if you are in that area you can expect a larger than normal bill on your next one after your upgrade and you won't be getting a credit for the double charge the month after.