The inertia (push) switch under the right hand rear of the oil tank just kills power to the fuel pump, the starter motor would still work.

Does it have an immobiliser? If so (and not being rude) did you remember to deactivate it with the key fob?

There are also instances of the immobiliser fod or system causing problems:

http://www.talkmorgan.com/ubbthreads.php/ubb/showflat/Number/674639/Searchpage/1/Main/40212/Words/%2Bimmobiliser/Search/true/re-immobiliser-key-fob-code#Post674639

Red Leader drive