It looks to be by request.
They seem to get a lot of supercar clubs etc. If enough people are interested then we could approach them. I'll send them an email to see what they might offer...
I'm in no way affiliated - just know them by reputation..
Car: 2010 Jaguar XFR (Cat-back exhaust)
Gone but not forgotten: Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)