I noticed that this has not been replied too so i thought i would for you.
If your a customer already then i would have thought it would be ok, they may require a bigger deposit for the service. But usually BT are pretty good.
Are you an exsisting customer who is just moving?
Jo x
For more info on how i have come through bankruptcy and for links to help, you can read my blog here called: Jo's Links and added info on Bankruptcy! http://debtfreejo.blogs.bankruptcyhelp.org.uk/