I managed to get 'Whole Earth Original Style peanut Butter' with no added sugar the last time I was in the UK. The carbs are about nine but the fibre is 7 so the effective carbs are very low.

Inspired by your post last night I tried the following experimental receipe:

3 sppons peanut butter
1 spoon cocoa powder
2 sppons butter
1 large sppon powdered sweetener

Mix the whole lot together into a stiff paste, Shape into rough balls and chill in fridge.

Result: A sort of chocolate blob which can be just eaten or used as a chocolate spread. It was absolutly delicicous!

regards,
Robert