i have this problem, at the moment,
if you take the badge out of the front grill you will see 2 screws going through the bonnet catch, undoo them, then at the bottom of you grill there should be 2 screws holding the front grill/mask in, undoo them and prize the grill upwards, if you look in the hole (where your badge was) then you should be able to see a third screw behind the grill (whilst prising up) once youve got at this screw then the bonnet will lift up with the lock still on the bonnet,
HTH