I think it was a one-off play possibly starring John Hurt (but I can't find anything online to back me up on this) about a man whose wife leaves him and he starts a slow decline into madness. He barricades himself in his house, stops answering the door, catches cats in the garden at night to eat, fills his freezer with animals, electricity etc gets cut off, etc. It's not pretty, lets put it like that. I saw it maybe 2003 to 2005ish??? It was a one off I think. Does anyone remember anything like this? Googling has not come up with anything.