Dollydisco, fanatic - thanks for all the help, I has now got it started (although feel a fool!!)
whilst at the point of verrry nearly smashing the disco with a lump hammer a mate came round to have a look see as he knows a lot about cars. Whilst explaining what I had tried thus far, I turned over the small piece of card from LR to find that the code I had been entering in drivers door lock to bypass immobiliser was 'security code', on the back of the card states the 'emergency code'!!!
Wanged the other code in, no sound from alarm to tell me whether it had worked as thd siron has been smashed to pieces.. but the immobiliser light had gone out!!
Wh00p wh00p, engine fired up a treat

Was VERY satisfying to see no leaks once it had warmed up, my first ever top end recon!
Slight issue now with engine cutting out once it warms up which I guess will be a sensor of somesort playing up and giving EDC a false reading..
So, today's plan is to get ABS module back in and clean up underside of front end.
No doubt will be in touch with more questions!!!!