Sad to see.

I hope nobody in your car was injured.
Sorry, I can't help you with any parts as other than my Stradale all my 131s are four door, but I think you mean OSF panels, not NSF, as looking at the photo it's the off side of your car that appears to be damaged.
I think you'll struggle to find the correct colour coded trim in the UK, but you might be lucky. Probably have to settle for black and then get the parts sprayed. Also, make sure that you get the correct front wing as the Sport/Racing wing has a different profile to the standard cooking saloon and estate cars.
Looks like that will be an expensive repair for what looks like a small knock. Hope you get the cash out of the 'individual'!!
Where in Hampshire was the run you were on? I live in Hampshire and would be interested to learn more about it for next year - perhaps we could enter a 131 'team'.