Retro conversion! Looks well good. Strange I found three of these figures in a bag of bits I was given. I recognised them but couldn't remember what they came from. Until now!
I had a fair few of the Britains knights, to go with the castle I helped my father make for me. They were good toys. I remember a younger cousin having the Britains Space Stargard & Aliens stuff & thinking it was quite clever with all the modularly it had. Ship "3107" came out really well. I particularly like the 'highlighter' weapon, looks like the chunky, blocky & oversized gun that Simon Bisley would have given to Mek-Quake for really "Big Jobs!"
You need a C claps. With screw thread. So you can fix back your ship........ A C Clap is a tool that pulls out gears and other used for it. They come in different sizes. I used it on my model project from times.