Thanks both - a shame that there are no plans for my cabinet and WBC
My line does sync at 8128kbps with a attenuation of 28.0db and noise margin of 7.6db so I would have hoped for a good upgrade from ADSL2+ but alas that may not happen!
There are no LLU providers in the exchange unfortunately or I would have jumped on one of them.
AAISP availability checker on your post code comes back with
TT availability checker response
Estimated standard ADSL download speed 5,854kb/s to 12,725kb/s.
Estimated Annex-M speed 1,500kb/s Up, and 7,500kb/s down.
which seems to indicate that the TT back haul is in there for you, (i was told i was moving over to talk talk back haul as well even though sam knows etc says not available, but sure enough i was moved over to talk talk on adsl2, so it looks like your exchange is the same as it says sorry TT not enabled at exchange if its not available)