Back again...
I refilled the Fuel filter..had no diesel left in my Jerry can so decided to use my reserve bottle of FORTE..Refitting is a pain..initially I wasn't happy so undid it refitted and it felt right..there is a knack and after several goes got there in the end.
Time to call the wife..foot down on both clutch and throttle...asked her to turn the key...as it turned over,(No sloppy turnover this time with the new battery

)I sprayed a little Brake cleaner and..hey presto she came to life..what a fantastic feeling...
My nerves and sickness had gone and I was carrying out checks while it was ticking over..nice tickover too...only to find a pool of oil appearing on the road...guess where it was coming from! Here from the back end of the rocker head...(Apologies for quality of the picture)

I'm a bit gutted...new "rubber type (I know its not rubber..I cannot remember the exact material name) gasket" torqued up and followed the tightening up pattern as specified

It was noticable too ooozing out as though no gasket was there. Other areas on the rocker cover were dry..I checked the tighness just in case and bolts towards the back end seemed fine.
It looks like its been a common factor/problem from all the old oil deposits before I started working on it. Not sure how to over come this problem..initial ideas are to double seal with gasket sealant..stuff I mentioned earlier and up the torques..either that or revert back to using a cork gasket and again double seal with gasket sealant. I am sure there are members that have experienced this as I understand its very typical..what I would like to know is the best fix..as ever advice and tips from those who done battle with this reacurring problem is most welcome.
Thanks everyone for your support tips and encouragement..your all ace as is the forum..its been an asset and I am truely grateful to all that have posted...
I am well chuffed I have the van running..sounds sweet too..

..sadly I'm unable to do anything for the next few days..back to work start when its dark..finish when its dark...

..earliset I can have a dabble is wednesday morning..before my two night shifts begin..
Catch you all soon...
Thanks again for your support
Tom