Benga, Skream, Rusko and a live dubstep US based group called Trillbass where my first introduction to dubstep about 5 years ago.

Dubstep is actually very easy to make now days and thats why there is a lot of shitty dubstep music out there. The OG's of dubstep are true musicians. Claw from Hulk and formally Trillbass is probably one of the most melodious electronic bass players on the planet. He is the only producer I have ever heard that can turn an odd number of bars into a melody. Which in music world is almost impossible to do.