JCT600 Ltd is an English group of privately-owned car dealerships. The company operates in Yorkshire, Lincolnshire, Derbyshire, and the north east, and has 53 dealerships.^[1]

The company, a family-owned business, in 1946 as a single garage shop on Sticker Lane in Bradford. Originally called Tordoff Motors, the company was established by Edward Tordoff, before being taken on by his son, Jack. Jack Tordoff was a successful rally driver in the 1960s and 1970s and winner of the Circuit of Ireland Rally in 1973. Tordoff developed the business over the next 70-plus years, founding JCT600^{[clarification needed]}, before his son and current chief executive officer, John Tordoff, took over in 2002. Jack Tordoff died aged 86 in 2021 following a lengthy illness.^[2]

The company name, JCT600, came from the personal number plate of a Mercedes-Benz 600 owned by Jack Tordoff, which he also used on his Porsche when he won the Circuit of Ireland Rally.^[3] The company employs over 2,400 colleagues, is one of UK's largest motor retailers, and has been a family-owned business for four generations^{[4][third-party source needed]}

JCT600 sponsors Bradford City AFC, a fourth-division English football (soccer) club. This is one of the longest running partnerships in English Football League History^{[citation needed]}. In July 2022, they established a three-year sponsorship deal which will extend the current agreement through to the 2025–26 season.^[5] JCT600 founder Jack Tordoff was an honorary life president and was a lifelong supporter of Bradford City AFC, regularly taking his two sons to Valley Parade throughout their childhood.

The company sells new cars from the following brands:^{[citation needed]}