Hi
If you move the lever towards the side it will go past its normal stop rest.
This is what you need to do with lever to get just a bit more travel that can sometimes pull the cable enough open the bonnet. You pull the lever over so that it can go past its normal stop.
Other than that you can cut the bonnet handle to release the lock.
I always fit a secondary cable release under the mudguard.
Steve
PS I had trouble loading this photo, let me know if you cant see it