As thick in the head as we are lead to believe, Blake Fielder-Civil to be, even he must now know that he’s being watched by private detectives!

The ex-husband of Amy Winehouse is apparently under surveillance by private detectives sent to observe him in a bid to keep him from making off with a lump sum of her $12 fortune.

The Back to Black singer is sending her boys undercover in order to compile a file of information on her former husband from whom she was finally divorced based on the grounds of adultery in July this year.

A source told the UK‘s News of The World, “The family have a record of everything Blake has done to hurt Amy and they’ve hired a private detective as well, Amy’s determined Blake’s not going to get a penny. But as much as she hates him right now she doesn’t want to leave him in the gutter.” ……where doubtless he would frequently encounter his ex wife after her nights out on the binge!