Once they were all connected together it was time to fit them into the lenses. This wasn't how I was going to mount them originally but they look ok and it made life a lot easier!
And finally, here is one of the completed clusters. They are still a little rough around the edges and I'm not sure that the brake/tail light is bright enough. This is mainly down to the extremly dark lense, another we have is much lighter and the LEDs shine through very brightly so I will be trying to source a pair of these lighter lenses.