Drivers door

Morning Guys n Gals, Hope one or more can help me solve a problem with my 57 plate Freelander, Get out of the car press lock on the fob and the car locks and alarm arms apart from the drivers door which remains unlocked a second press of the fob and everything locks, is it a repair or new parts required?
Thanks for the help.

Hi sounds like you need a new door latch - the motor has gone for the lock function.