Hi all, sorry if this has already been discussed, but I’ve noticed that my drivers door isn’t locking with the central locking, but all the others doors will lock. I’ve tried with the key but it won’t turn and I’m scared to snap the key as it’s so stiff, does anyone have any idea what it might be and if it’ll be an expensive fix or not ? 
 

Thanks in advance 

Drivers front door lock will need replacing.

Try a good squirt of WD40 into the lock first.