Hi,
The business essentials bundle is going to be the best value for money and comes with both your telephone line and also up to 10Mb Broadband via a cable modem, this page should give you a good idea :
http://www.ntltelewestbusiness.co.uk...broadband.aspx
I would advise that you give them a call to find out exactly what they can offer you in your area...
To give you an idea on the prices (don't quote me as I don't work in sales) :
Broadband only (12:1 Contention / 40 hour SLA):
4Mb - £30 per month
10Mb - £40 per month