I have reviewed the legal pack and unfortunately all it includes is the EPC, so I'm unsure where that puts me but potentially doing a bit more research.
enquire... ask why you may find that the pack is just the starter, they add documents as they become avaiable. If no documentation then its a distressed sale and bid accordingly.
I did something similar and the lender mainly cared about the equity in my current place and that the exit plan made sense—they weren't too bothered about income or small debts.