Gilbern Sports Cars Ltd was founded by Giles Smith and Bernard Friese, a German engineer with experience in glass fibre mouldings, and was one of the few cars to be made in Wales. Friese had made a one-off car for himself and the two partners used this as the basis for the first Gilbern car. The premises were a tiny workshop in Church Village, Pontypridd but when production started the business moved to a new location at the old Red Ash Colliery at nearby Llantwit Fardre. The cars were available at first only as kits but later complete cars were also available. The name, Gilbern, was a combination of the first three letters of the name of founder Giles Smith and the first four letters of the name of his co-founder Bernard Friese. Gilberns have often been entered in competition at the Wiscombe Park Hillclimb, first appearing there in 1962 in the hands of an Aston Martin Owners Club member. The Society of Motor Manufacturers and Traders accepted Gilbern as a member in 1965, and the company was permitted to operate a stand at the British International Motor Show at Earls Court thereafter. In 1968, following a search for a cash injection, Gilbern was taken over by Ace Capital Holdings Ltd, whose main business was the manufacture of slot machines. Following the takeover Giles Smith left the company to be replaced by Mike Leather and Maurice Collins as joint managing directors. In 1970 Ace was bought by entertainment group Mecca Ltd, who sold the company to Maurice Collins; in 1972 he in turn sold it to Mike Leather. The cars were expensive for the time and became more so with taxation changes that added Value Added Tax to kit cars. Production ceased in 1973. A one-off concept car, the T11, was produced, just prior to the company's closure, and was restored in 2009–10, appearing in some classic car articles in early 2010.
Gilbern GT
The GT, a 2+2 two-door coupé was the company's first car and was made between 1959 and 1967. The GT Mk 1 was initially available with either 948 cc BMC A-Series engine with an optional Shorrock supercharger or Coventry Climax 1098 cc engines. The chassis was fabricated from square steel tubing and the front suspension was initially from the Austin A35. The body was a one-piece moulding. Although usually supplied in kit form, the body was provided fully trimmed and painted leaving the purchaser to only complete the mechanical items. Later versions came with a B-series 1500 or 1600 cc MGA or 1800 cc MGB engine and coil-sprung BMC rear axle. With the coming of the larger engine, the car was renamed the GT1800. A car with 1600 cc engine was tested by the British The Motor magazine in 1961 and was found to have a top speed of and could accelerate from 0- in 13.8 seconds. A fuel consumption of was recorded. The test car cost £978 including taxes of £251.
Gilbern Genie
In 1966 a larger, more up-market model, the Genie, appeared at the London Motor Show. It could be had with either a 2.5- or 3-litre Ford Essex V6 engine and gearbox with optional overdrive, but the steering and back axle were still BMC units from the MGB. The engine was fitted with a twin-choke Weber carburetor on most cars, although a small number were built with Tecalemit Jackson fuel injection. The rear suspension differed from the MG in having coil-spring/damper units and trailing arms. On early Genies, the rear axle was located with a Panhard rod, which was then changed to a Watts linkage on later examples. The 2.5-litre version was dropped in 1968. In 1969, a complete car cost around £2000.
Gilbern Invader
The final car was the Invader, introduced in July 1969 and based on the Genie but with improved chassis and larger brakes. The front suspension now came from the MGC and the chassis was strengthened. It took the brand further upmarket with fittings such as electric windows and walnut-veneered dashboard. The Invader was available as a complete car and from 1970 an estate version was also produced. Automatic or manual gearbox with overdrive were available. It was updated to the Mk II version in 1971. Launched in September 1972, the Mk III version had a Ford Cortina front suspension and was restyled front and rear. The engine was the higher tune unit from the Ford Capri 3000GT. The body was produced using new moulds and was both wider and lower than that of the earlier Invader. Track was extended by four inches. The wider axle led to wheel spats being added to the sides of the car. At the back the live rear axle was located by trailing links and a Panhard rod: adjustable shock absorbers were fitted all round. It was only available as a factory-built car and cost £2,693 in 1972.
T11 Concept
Designed by British designer Trevor Fiore, the T11 was built in 1970, and was due to show at the 1971 Geneva Motor Show. It was equipped with a lightly tuned 1.5-litre Austin Maxi drivetrain turned by 180 degrees. The company recalled the project, however. Three chassis were built but only one example was finished. These were restored and completed in 2009–2010.
