Automotive Design & Development (AD) was a British automotive manufacturer active from 1982 to 1986. The company was initially established in Colchester, Essex, and was known for its involvement in the kit car market. Before adopting the AD name, the firm operated as Perry Automotive Developments, focusing on importing the US-made KARMA, which was a replica of the Ferrari Dino. Under the AD brand, the company developed the AD 400, a…