Help!!!

Ok so my impreza wrx 2004 2.0 t is due an Mot but i cant open the bonnet. i tried taking the cable out of the housing and pulling with pliers but nothing it seems the problem is at the other end, i tried some WD40 and pushing on the bonnet but nothing

Please help is there a back to getting it open, is this a common problem as the car otherwise is in great shape i just don't open the bonnet very much and have recently got back from an overseas tour so she hasn't moved.

Thanks in advance

 

ooops i know this is in wrong section, can any mods please move as i don't know how to delete.

Thanks