After some help and guidence from Clan many many thanks pal
I seem to have fixed the fault, But don't no how? I checked the glow plugs for resistance all okay.
I then pulled the leads off the plugs and checked them for voltage during starting all seemed to show around 4.7 ish volts. I then checked the fault codes after clearing them before I started and it showed open circuit on all five as the leads had been off.
I then cleared these reconnected everything and started the car. And the fault has gone? I'm happy but confused again.
Best Colin.