Problem fixed
Went from:-
06F 133 062 G (30-12-05) Siemens (Came with the Leon TFSI Sport 06)
to
06F 133 062 J (03-03-10) Continental (Brought from eBay not too long ago, failed & will be returning back)
to the latest...
06F 133 062 Q (10-05-120 Continental (Brought from eBay again, but this time success working fine!)
Fitted the throttle body this morning and it has solved my EPC issue, seems like Q is the way to go...
Hope this helps!