Thank you so much for taking the time to reply and to share your experiences. I am convinced now that something is going on, but I have no firm evidence, and I still feel uncomfortable about virtually accusing this pair of taking advantage of my cousin. My cousin, too, is disingenuous in his dealings with me on the matter, which is making things more difficult to unravel.
I still don't really understand this couple's motives, however. My cousin is not elderly, or wealthy. He has a small house, in fairly poor condition. The value of this house is about £80k. He has inherited some money from his mother, and he has some money himself. Having been on benefits for most of his adult life, he has enough to pay a psychiatrist privately, but is otherwise frugal. He probably has far more than I think, however, as a result of his frugality over the years.
The couple own a far nicer, larger house. They are retired, not well-off apparently, but run a car and go on expensive holidays. They are well-known to our family and the lady used to clean for my mother before she died. They are by no means strangers. I would have no reason to suspect them, and up till now I have been thankful that they have managed to convince my cousin to improve his living conditions,; this is something I have been unable to do myself.
But my cousin has become over-dependent, on this couple and on his network of supporters. He has his meals brought to him, he has his dog walked, and his shopping done. All his needs are met, and he refuses to do the smallest things for himself, even though he is perfectly capable in many regards. He has problems, but has rendered himself more vulnerable to possible exploitation by his own passivity. My patience with him is also wearing thin, as he stubbornly refuses to take my advice.
My first course of action will be to contact social services. At least I will have articulated my concerns. I am also in a position to intervene directly and wonder if I should do so. However I appreciate that this course of action may leave my cousin even more exposed.
It's also possible, however, that my cousin no longer has full mental capacity, in which case I assume that Power of Attorney will be granted without his permission being needed. Does anyone have any experience of this?
Thanks again.