Jesus Im having serious trouble with passwords.. lets hope this one sticks
Right, I'm honestly stumped on that.. Possibly a battery on it's way out. Or indeed an earth. I'd start by making sure the battery terminals are tight. Then, assuming the battery is good, connect a jumplead between the negative terminal of the battery and a metal point on the engine. If the car starts under its own power with the lead like that, then an earth problrm is very likely. I'll see if I can dig up anything about earth strap locations but generally speaking, earth straps are found between the gearbox and the body, or on the ring of bolts between the engine and gearbox, or around the engine mount on the timing side.