CROWDS of custom car enthusiasts are expected at the South West's biggest showcase of personalised cars at Castle Combe circuit on Saturday.

More than 60 owners' clubs throughout the region are taking part in the day, which gives enthusiasts the chance to take their road-legal cars on the track without fear of speed cameras or traffic police.

The event attracts a host of car-mod and conversion specialists who show off their latest projects while there will also be trade stands that specialise in racing, motorsport, car modifications, upgrades, and go-faster must-haves.

A new fast-track system allows enthusiasts to book their driving time, and the number of cars on the circuit at any one time is being limited to enable the enthusiasts to enjoy more track space.

There will also be special sessions for motorists who are venturing onto the circuit for the first time with "new to track" briefings, and "yellow card" rules will stop inconsiderate drivers from spoiling the day for others.

Circuit chairman Howard Strawford said the new systems were introduced last year to reduce delays and improve the driver's experience on the track, and they were so successful that these are now regular features of the action day.

Other features include a prize for the best club stand and vehicle chosen as the car of the show, while other attractions will be a mobile stand that gives enthusiasts the chance to play a version of TV's Robot Wars, and a "rolling road" for drivers to check their cars' braking and performance.

The event is the first of four this season that give enthusiasts the chance to test their skills and their cars on the racetrack, as well as demonstrating what a vehicle make-over can achieve.

The day starts at 9am and drivers wanting to take their cars onto the circuit will pay £30 to complete five laps.

Adult admission is £10, and £5 for pensioners while accompanied children under 15 go in free.