I do feel for you chaps, passing an EPC on any of our jobs we get is a given.
I think even if there wasnt this EPC crap, business wouldnt be any better. PV is back to a cottage industry, from 2 week (last yr) now to planning/"hoping" for 1 a month. The mad rushes are getting less and less November was stupidily busy, February was managable, August we're done and dusted although one might come through (pending planning). Some would call it a hobby rather than a business !!
Same here, there is just not that level of interest anymore and we have been advertising!