Hi guys I'm having mega problems with my boot it's stuck shut it tries to open but won't.but every now and again it will open I can't even open it from inside the boot I've changed the battery on the car as it was low so I'm stuck any help is appreciated 

Sounds like it needs a new latch.

Remember a few of these had badly fitting tailgates mines included. The heat would expand things enough to jam tailgate at tail light. Also if it was parked on uneven ground sometimes was enough to flex the bodywork and tighten things up on one side.   Try opening it at handle and lifting at the same time.    Check body gaps between tail gate and tail light.   Other than that could be the catch itself , needing adjusted or needing replaced.     Worth a look.   

Ok cheers guys