The main reason was mentioned and that was raising money for charity.
Below is what i sent to the photographer who passed the details on to the mag
Jon
Here is some info i already knew for some of the cars, will just wait for Nick on the others. New comments in red below
Also in the feature we would like to give a shout out to the following companies
Nick & the guys at R_tech for hosting a great day & donating some great prizes
Kenji Lewis for taking the excellent pictures
Eco-tech Performance
Forge Motorsport
SuperPro
Dodo Juice
Waxamomo
SPAX Performance
Powerflex
Whiteline
GolfGTIForum
UK-MKIVS
R32 OC
Dan (Tech) & Hulmie for organising the event and helping out big time on the day.