Ok... this is going to sound like a very odd post so bare with.
Can NTL actually provide Cable broadband if there are no green boxes in the area, but their checker says they are capable of providing cable in that area?
I do have some pics that might suggest there is cable in the area, but I'm still unsure.
http://server5.uploadit.org/files/borgmaster-cable1.jpg
http://server5.uploadit.org/files/borgmaster-cable2.jpg
Bare in mind I cant see any green boxes in the street, but there is some odd ducting visible, very close to the walls of the houses, but has no black boxes attached to it with no CATV labels etc. All the normal stuff I would have looked for.
(This is in Coventry btw)