I am unable to view my bill due Sept 07 and indeed had similar problem to view my June 07 bill.. I have emailed BT and here is the reply...
Dear Mr Greenfield,
Thank you for your e-mail dated 20/10/07 regarding online bill.
Please accept my apologies
It has been brought to our attention that in some circumstances the bill is not shown in the website. We are aware of this problem, and are looking to resolve it as soon as possible. We have therefore decided to disable the feature until these problems have been fully resolved. We hope to restore this service as soon as possible, but at this point we do not have a timescale for this.
I can arrange a bill to be sent with full itemisation. Regarding sending you the duplicate paper copy of the telephone bill, I would like to inform you that this copy will be chargeable. The charge for the duplicate copy of your telephone bill is £4.70 incl. VAT, which will show up on your next bill.
Please accept my apologies for any inconvenience this matter has caused.
Thank you for contacting BT.
Needless to say I declined their "offer" for a duplicate!!!