Another day, another problem [LOL]
I was just about to undo the bolts holding the fuel pipes to the fuel filter and as I tried to loosen one of them I saw the filter turn and the metal pipe at the back of the filter creak and sure enough it started to leak [:^(]

The pipe is the one in the centre of the picture.
I'd rather buy new than a second hand one (if possible) so will this be main dealer only?