Most likely fault is the switch on the brake pedal bracket. You can check it with a multi meter. Alternatively unplug the switch and short out the pins on the plug that connects to it. If the brake lights come on then the switch is faulty. If not check fuses, bulbs and wiring. I assume rear sidelights and indicator work OK so earth is probably OK.
Thank you... and yes rear lights do work and indicator, its just breaklights and tail light that have stopped, I had an error code sometime in January when i broke down,