Hi the Drivers Door won,t unlock with the fob Will it be the accuator ???

Could be several things:

Start with the easy stuff first like fuses and low fob battery. As below if a module is goosed it my have knock on effects so check those out to reach a conclusion. A drop of easing spray into the locking switch and door frame may go a long way.

DOOR MODULES
The door modules provide the interface between the door latch motors, the door and latch switches and the CJB. The door modules provide door microswitch status information and enable the door motors on request from the CJB. The rear door modules are controlled via the front door modules on the Local Interconnect Network (LIN) bus. Additionally, the front door modules also control the exterior mirror functions.  FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

Booked in at dealers on tuesday looks like its covered under the LR warranty