"Mac" McGee and Gordon Bedson created their 500 in 1952, the name being derived from a combination of their names. Gordon Bedson having worked as a mechanic for Alan Brown for several year previously.

It has a tubular chassis with wishbone front suspension and swing axle at the rear and was lower and sleeker than most cars of the time. Norton double knocker engines were specified.

Three cars were built, one being driven by Ken Wharton.

At the end of 1952, Gordon Bedson left the Mackson concern, and became a director of Kieft cars.

Gordon Russell's Mackson at Cadwell Park in 2005

Allan Scoble in the Mackson

As reviewed in Iota