jimgriff,
Do you not have cable where you are ?
I would think very carefully about going Broadband with BT.
I guarantee that you will get messed about left right and centre.
BT are not allowed on my property. That's another story !
Their Broadband product is poor. ADSL is a very old technology which has been around for 20 years.
Go cable and get a true DSL service. The hardware which BT provide is unreliable. The hardware with cable companies is proven technology.
I have worked with the companies which design it and sell it i.e. Motorola
BT give you Alcatel crap which doesn't work well. It's a cut down product that doesn't give reliability.
At the end of the day it's your choice.
Cable would be my solution.
LL34