In reply to blanchie14c:
It's a trasnformer plug, I found I could open the plug up with a sharp knife, and cut back the cable outers and twist the wires together again, and then wrap with gaffa tape.
Transformer plug is currently held together firmly with more gaffa tape.
Might invest in some heatshrinks and solder and heat shrink the wiring and use superglue or something to seal the plug back together.