I've never been a fan of flexi discs, and this is the only one I've ever collected in my life. Like Polish Postcards, the sound quality on flexi discs tend to be utterly bad. They're cheap and nasty, and really not worth collecting at all.
This one is a three track song sample of edited highlights from Never For Ever. Issued in 1980, this flexi was available in two forms. This is the UK version, which was released in a circular format. There was also another version of this released, but it had a square shape to it. I believe the square version came from some Belgium magazine or something.
For the benefit of anyone that doesn't know what a flexi disc is, it's basically a paper thin piece of plastic that's flexible like a sheet of paper - hence the name “flexi”. In fact, you could crumple these things up like a sheet of paper too, but I wouldn’t advise that unless you want to destroy it. Due to their nature and thinness, flexi discs are usually only pressed and playable on one side only.
There are many downsides to flexi discs, and it's basically why I've never had an interest in collecting these things. They can become easily damaged due to their extreme flimsiness, and the sound quality of the recordings aren’t usually up to snuff like a proper LP. Storing them can also be difficult; not only to prevent damage, but also to prevent warping. Humidity and heat can easily warp these things, so they need to be kept at room temperature and away from direct heat sources. Basically they're more trouble than they're worth.