All I can say is Hyndburn Homes need to catch up!!
We have been building in Blackburn and Darwen for over 3 years now and the main thing we include on all our sites are two bed bungalows as this seems to be the area where there is the biggest shortfall (except large family homes).
Over HA's in this area have also cottened on to this too and also built bungalows, what you are unlikely to find is private builders building them as there is more money in building houses or apartments for the land space it takes to build a bungalow.