The final Gilbern 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 up- market 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 transmission 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 (10 cm). 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 £2693 in 1972.