Please take every offence to this if you have to, but have you actually looked at how you've written that statement?
If I was in charge of programming on Finchley Bottom TV, I'd laugh my arse off if that was sent to me - let alone a national channel like C4.
You give no examples of Audience Demographics, Viewing figures that the US has acheived, or even what the hell "sup-air paintball" even is! I would strongly recommend throughly re-thinking the entire thing, and actually putting forward something resembling an arguement/proposal.
Try including: Numbers of UK residents participating in the "Sport", Locations events are held, Number of Teams from all over the world that attend Events, How much money participants spend (on gear, guns, travel, entry etc.) and anything else that says "These people buy ****! We should be advertising to them!" Cos at the end of the day, the channel is gonna need to sell advertising in order to show paintball.
Good Luck.