Hello Pudster,
I applied for a Blue Badge for my wife about 10 weeks ago, and have just had the email requesting payment for it, so hopefully it is coming.
I found the online form in our council area a little confusing - it asks what the person can't do, and as that is pretty much all of it in the case of my wife I ticked loads of things that led the computer to think I was applying on mobility grounds and it was refused. So I called the council Blue Badge team and applied that way, and that was much easier.
They did ask for evidence, and so I provided the letter from the memory clinic (from about 4 years ago) confirming the diagnosis, and the DWP PIP assessment paperwork, and that seemed sufficient.
We did have to have a telephone assessment which happened this Wednesday. That added a delay, as initially the assessment company phoned and asked to speak to my wife, and she can no longer understand phone calls, and they wouldn't speak to me. I had sent the council a copy of the LPA as well, so I had to chase that back through the council. That added some 4 weeks to the process.
Call was arranged for this week, so I made sure I understood the grounds for a Blue Badge for non mobility issues were primarily distress caused when traveling and being a danger to oneself and others. I spoke about these aspects with the assessor. He was very understanding, and ended up saying "I don't know why they just didn't give you the badge straight away, based on the information you provided on the form".
Hopefully it will be with us in a few days!