Many thanks for the replies. I have now contacted HBC and they advise that we are in fact in a smoke controll zone so unless the appliance being used is an exempt appliance (certain boilers and burners) then smokeless fuels have to be used. None of the stoves I had in mind are on the exempt appliance list so looks like I am going to have to burn smokeless fuels.
So........next question (you can tell im new at this

) there are a load or people on the web and in the yellow pages that sell smokeless fuels - does anyone have any particular recommendations?