At the time of writing this film is only available for DVD pre-order, but having just noted the forthcoming release I have to say that I'm delighted to learn that it's coming out on DVD.
I found this on video about five years ago for a pound in one of those remainder shops. I'd never heard of it and was surprised by this when I saw the cast, especially as it looks the sort of film that would have been televised in the afternoons in the 70s, maybe it was and I missed it, but, whatever, it was new to me when I saw it lying there. I don't even think I watched it right away - I think it stayed forgotten on the shelf for a couple of months and finally got a viewing when I was bored and rediscovered it while desperately browsing the shelves.
To be perfectly honest, because it was so unknown I thought it would just be one of those cheaply made below average comedies that were churned out at the time (our UK comedy stars weren't too expensive to hire - look at what great Carry On stars got - so getting a reasonable cast together even for a poor film wasn't hard), but it isn't, it's an absolute gem!
It's so long since I saw it that I can't really remember much of the plot now, and I can't even remember all of the cast list, so I know this isn't going to be a great recommendation for some people, but trust me on this - the stellar cast of great British comedy actors are on top form and the clever plot and top comedy leave me extremely puzzled as to why this film is so little known and not ranked alongside the other great British comedies of this period.
Maybe there were distribution problems that gave it a backseat on its original cinema release, but because of the high price of its original video release (I know I got it for a pound, but I'd bought other vids on that label and they were VERY expensive!) it wasn't destined for much of a wider distribution or appreciation the second time round either. I really hope this better Amazon-discounted-priced DVD release finally gives this film the attention it deserves. Hopefully in a year or two I'll be able to revisit this page and see lots of great reviews and ratings for it.