Or some of their debt paid off for agreeing to be on it?
They obviously agree to it, even if their faces are blurred, because you often get a shot of the bailiffs outside and then it cuts to the inside of the house and the person letting them in, meaning they would have to stop filming in between knocking on the door to letting the bailiffs in to get all the cameras and lighting and microphone and crew in etc and then film the door being opened.
So I just wondered whether they get anything out of it?