OK So AA came out.
Seems I have a leaking fuel injector which is either
1. Reducing the pressure inside the engine so there is not enough pressure inside for the engine to start
or
2. It is causing an airlock in the injector stopping the fuel from getting through that one injector.
and / or it might the glowplugs.
However. . . .
The AA guy did get it to start with a squirt of EasyStart (which I now have a can of)
So the plan is Use easyStart to get me to work over the next 3 days then get it into the garage
on Saturday morning and pick it up Monday Afternoon.