Thanks to the fact that his head had broken off, I bought this

Fortunately it was a clean break & the previous owner had glued it back on using contact adhesive which, despite looking a mess, was easily removed & hadn't harmed the plastic.
As I've yet to discover a glue that'll work well with this kind of plastic, I figured the best way to reattach it would to be to by using a screw & a couple of washers.
I carefully drilled a hole in the bottom of the neck, starting off with a very fine drill bit & then using progressively larger bits (to not unduly stress & crack the plastic) until the hole was the correct size for the chosen screw.
It was then a simple case of checking the tightness so the head wasn't wobbly yet can still freely move.
Once the figures re assembled it's impossible to tell it's ever been broken.
Jobs a good un!

This is probably a well known repair method to experienced collectors, but it's the first time I tried it myself & have a very satisfying sense of self achievement in saving a desirable


Cheers
T'shot.