Found the problem. Pulled the fuel pump out and here is what I found. Note, this is how it looked upon removal before I touched anything. Check this out;





It appears the fuel pump has been replaced at some point and the hose joining the pump to the tube was not suited to being submersed in fuel. The hose has pretty much doubled in length and allowed the fuel pump to fall off and float in the tank. Also the negative wire had ended up with the insulation being stripped off it. Replaced the hose and wiring with items I had laying around as luck would have it and all systems are go.

Many thanks for the input guys.