'fraid so....... They (NTL as they were before) stopped installing cable a long time ago - though they did cable much of the Cwmbran area (ironically they cabled my old house just before I moved about 6 years ago. Doh......)
I moved to a brand new estate, on the edge of Cwmbran, and probably about 6 miles from the exchange. Again, ironically, only a mile or so from another exchange in the next town
I'm separated by an A-road from the next town. So people in a street about 20-30 metres from me are achieving 8Mbps rates, whilst I'm languising at sub-1Mbps.
BT Wholesale's Availability Checker tells me that the Cwmbran exchange has ADSL (for which I can get 512kbps), and also ADSL Max (for which I could get 1.5Mbps), and also ADSL2+ (where I could get 2Mbs). I'm with Sky, but don't know which service I have. I wonder whether it's worth asking if I am on ADSL2+?
The SamKnows web site also states that the Cwmbran exchange has 21CN WBC enable since Sept 2009! But it also says that 'There is currently no 21CN migration date for your PSTN service', so I'm not sure what that means.