Creative Carbon were the only company to make the front bumper splitters, fog light surrounds & bumper vents originally. However based on posts on the RS Owners Club i don't believe they're currently making any at the moment.
The other carbon company that did the fog light surrounds & also mirror covers is Steamline Carbon.
No other carbon company apart from Creative Carbon was willing to take on the work to make the bumper vents mainly due to the intricate nature of manufacturing them, and also the fact that once they'd been made, the resale cost vs production cost was pretty much the same so no profit.
Car Parts Express currently supply some other engine bay related bits of carbon though.
http://www.carpartsexpress.co.uk/pro...T_ID=&P_ID=694