Yes, the beam patterns are different. For LHD (drive on the right side of the road) the beam pattern kicks up and to the right, to illuminate road signs, and to not put as much light into the eyes of oncoming cars. RHD lamps are the reverse, they kick light up and to the left, since RHD cars are driven on the left side of the road.
I hope that made sense.
(Former) Saab Tech / Competition Prep