There you go then... It has been fettled by GT Tuning... Looks as though your car probably had the GTT CAI fitted at some point too... Website is
http://www.gtt.uk.com/home.asp
He has a package structure for tuning, so I'd hazard a guess that it's at least the GTT 210... Might be worth giving him a ring with your reg number... He might then be able to tell you if it has been tuned by GTT...