So my fuel leak transpires to be a failed clip to what I think is a breather pipe and I therefore assume that as I massively over filled the car this is the result. Anyway the tank is out and I am in the process of changing all the fuel pipes under the car, which leads to my post on the fuel system threads as Ive made a rookie error and the pic i took isnt clear so I am stuck working out which is which for flow and return. The metal pipes in the car and the rubber ones from them were both same size.