Not bad, but not great either. Some interesting historical information and moves along well enough to hold your attention, but overall seems a bit light and shallow. Mostly I just wish it had been a lot more information intense, but that may turn off some other people. The three other people I watched it with felt the same thing--decent and worth watching, but not exceptional. Also, very oddly, the show fails to mention (as far as I noticed) that the diamond in the Millennium Dome heist was replaced with a fake prior to the attempted theft--this is well known and a credit to Scotland Yard, so I can't think of any reason not to mention it.