Dealing with a 52 year old man, been agoraphobic quite a few years, basically keeps himself to himself, I have been around a few times to help him, just practical things he can't manage.

The council want to come and check his benefits are right, he gets ESA because of mental health problems.
He has really worked himself up scared of the council coming to the house, a bit intimidating to him.
I phoned up the council on his behalf, he spoke went through the security questions and passed the phone onto me.
I explained the situation agoraphobic man scared of strangers coming around and luckily the lady understand what I was getting at, is going to post out the forms for the man to fill in and send back at his leisure well within 28 days instead of the home visit.
I don't know if this will help anyone else but if you don't ask you don't get, so it's worth asking if anyone else has the same situation.