Beware the Amazon video versions
Sadly I was traveling a lot when this was first on BBC, so never saw the original episodes, which were 59 minutes (according to the BBC web site anyway).
Decided to take a look now, but the Amazon versions now available (U.S.) for 2.99 per ep are rated TV-PG and have been butchered to high heaven, presumably for some kind of content that is too R rated for the sensibilities of the Amazon subscribers (!).
The eps on Amazon are coming in at 52 minutes, 51 and some at 55.
Sorry. No sale.
That's some SERIOUS butchering.
I'm guessing that once it aired live, the version for sales internationally had to be seriously scrubbed to dumb them down and get a serious PG rating for the international mass DVD market.
Sad.