A feast of sports car racing is in store at Castle Combe Circuit's A Plant Lux Traffic Controls Sportscar Race Day on Bank Holiday Monday.

Races for Aston Martins, Ferraris and Porsches are among the highlights, with a special Trimarque challenge seeing all three marques pitted against each other.

Sports cars also feature in the circuit's own Sports and GT Championship race, in association with PSC, which has classes for both modified and relatively production road-going cars. The quickest of the modifieds is Trowbridge's Mark Funnell in his unique Honda- powered Lotus Exige, currently within three points of the overall title with two rounds left.

In the production class, Chepstow's David Jones has a slender lead overall with his Caterham. In the same class, Castle Combe's Keith Sprules has the power with his Ferrari 360 Challenge but nobody has more than Bath's Nadine Geary, whose Dodge Viper has 8.3 litres of V10, tuned by Janspeed.

In the outright sports racing car category, Trowbridge's Andrew Shanley in the Radical Prosport is level pegging with Simon Tilling in second place behind Bridgwater's Josh Fisher in his older Mantis.

Fisher is also due to appear alongside younger brother Felix in the circuit's Formula Ford 1600 Championship race.

Along with now-dominant championship leader Marcus Allen, Felix Fisher and Ben Norton have been the fastest men on the track and would be at the head of the points table were it not for two similar accidents with one other at the last two meetings.

This has put Castle Combe's Andrew Jones and Saltford's Steven Jensen second and third respectively in the overall points table.

This time they will have added competition from 2005 Formula Ford champion Tim Reynolds from Chippenham, out in a Spectrum 011.

The outcome of the circuit's National Mobile Windscreens-supported Saloon Car Championship is likely to be determined by the antics of the three drivers battling neck and neck for class C honours for up to 1.8-litre cars.

Reigning champion Jason Cooper from Yatton Keynell, Bromham's Will Di Claudio and Yate's Nick Charles can measure the difference in their pace in thousandths of a second.

The final round of the Ajec AWD Academy sees Melksham's Simon Norris in his awesome Mitsubishi 'Bogey' Evo. Bath's Angus Gorringe has the sole Audi in Class B and the field is combined with a saloon car invitation race.

The day's action starts at 8.40am with qualifying, with racing getting under way from 12.30pm. Admission prices are £15 for adults, £7.50 for OAPs and £2.50 for paddock transfer, while accompanied children under 16 are admitted free.

For more details, visit www.castlecombecircuit.co.uk.