upload speeds

Hello

I have a circuit which will have little use in GB terms each month - thus on 8000 Lite, but is on an exchange with no 21CN - so still stuck on up to 8 meg only (get 5-6 meg give or take).

However, the upload is just 432k - are we able to get that improved with Zen to the 832k max on the old 20CN stuff without having to pay £45 for the option!?

Is there some sensible option here (other than migrate to someone else that will do it at a cost but much less than Zen's cost).