I indicated to move to inside Lane from middle lane with plenty of space and warning and attempted to move he suddenly sped up aggressively and blocked my manoeuvre, he undertook all other vehicles and was aggressively tailgating the car in front before exiting and then sped off when traffic lights changed almost swerving around the roundabout in his white Tesla.
Short looking baldish guy in 30s/40s who has probably got a needle dick