Below are a number of useful links when considering taking your car on a track day. Most of those listed, I have used to modify my own car.

Tuning etc.

Bexley Motor Works	www.bmsport.com/
Split Second	www.splitsec.com/
GMC Motorsport	www.gmcmotorsport.co.uk
Hi-Speed	www.hi-speed.dk/Links.html
Clifford Cox Engineering	www.rollingroadtune.co.uk
ERL (water injection etc)	www.aquamist.co.uk
Ecotek technologies	www.ecotekplc.com
Hi-Spec Brakes	www.hispecbigbrakes.co.uk
Pace Products	www.paceproducts.co.uk
Geodesy (get one!)	www.morpheous.co.uk/morpheous.asp
Regal Autosport	www.regal-auto.co.uk/begin2.html
Rotrex Superchargers	www.rotrex.eu.com.
Demon Tweeks	www.demon-tweeks.co.uk/
Race Technology	www.race-technology.com/WebPage/FlashIntro.html

Track day and other associated type of companies

Company	Telephone	Web address
Aintree racing School	01928 712877	www.aintree-racing-drivers-school.co.uk
All Terrain Services Off Road School	01792 862669
Arrowstar	01869 250270
Aviemore off road centre	01479 831329
Bedford Autodrome	01403 739500	www.palmersport.com
Bill Gwynne Rally School	01280 705570	www.billgwynne.com
Bookatrack	0870 7441635	www.bookatrack.com
Brands Hatch racing School	08705 125250	www.brands-hatch.co.uk
Castle Combe Racing School	01249 782417	www.castlecomberacingschool.co.uk
Caterham Motorsports Club	01924 469376	www.caterham.co.uk
Circuit Driver	01502 478000	www.circuitdriver.com/
Crail Promotions	01333 450801
Croft Racing School	01325 721815
Donnington Park Racing School	01332 850417
Drive & Survive	01344 751177
Drive it all Rally school	01608 678339
Easytrack	01235 751109	www.easytrack.co.uk
Fastrack	01275 371400
Forest Rally Experience	01686 420201
Gold Track Driving Club	01327 361631	www.goldtrack.co.uk
Goodwood Racing School	01243 778118
Ian Wright off-road driving	01444 881190
Javelin Motorsport	01469 560574	www.javelin-motorsport.co.uk
Knockhill Circuit	01383 723337	www.knockhill.com
Lakeland off-road centre	01506 858543
Landwise 4x4	01479 831609
Land Rover Experience	0121 700 4619
Mallory Park Racing School	01455 841670	www.mallorypark.co.uk
Motorsport	0870 7872116	www.motorsport-events.co.uk/index.html
On Track	01953 888989
On track Experience	01245 324693	www.ontrackexperience.co.uk
Oulton Park Racing School	01829 760381	www.brands-hatch.co.uk
Palmersport	01403 733999	www.palmersport.com
Pembrey Racing School	01554 891042
Prescott Hillclimb Drivers School	01242 679796	www.prescott-hillclimb-school.co.uk
Pistonheads	01372 379537	www.pistonheads.com
Race-Speed	07796 958885	www.race-speed.com
RMA	01628 779000	www.rma-limited.co.uk
Santa Pod Raceway	01234 782828
Silverstone Rally School	01327 857413	www.silverstonerally.co.uk
Skid Control - Goodwood	01903 691 810	www.skidcontrol.co.uk
Slipstream Racing	07765 775285	www.slipstreamtrackdays.co.uk/
Snetterton Racing School	01953 887303
Thruxton Racing School	01264 882222	www.barc.net
Trackfun	01243 528815	www.trackfun.co.uk
Tracksense	01276 473616	www.hedgehogtrading.co.uk/tracksense/index.htm
Trackstar	01761 417602