Please find below some helpful web address links:  

UK Porsche Club Championship

Blackhole Motorsport - for the simulation playing racer in all of us

Zignatures - Excellent graphic design and artwork

Porsche 924 Championship

Renault Sport UK - Clio Cup Championship

ITV F1 - an excellent Formula 1 site

The British Touring Car site

Stuttgart Exchange - a new Porsche buying and selling site