Car is fixed
Problem was; the engine flooded itself. Apparently due to low fuel (15 miles on the clock left, even though i've had it lower) and my car being parked on a slope, it would of been at the back of the tank. And as the car tried to start, it obviously thought no fuel and flooded.
The RAC guy just revved and revved until it fully turned over. I asked what if it happens again what do I do, he said to ring them. He just pressed down on a pedal, not sure which though.
At least it was nothing serious!