Three to buy
AB Dynamics
This automotive-testing business is responsible for producing “robots that check the safety of almost all of the world’s major auto brands’ vehicles”. The number of tests a new car model faces before certification is rising quickly, from 84 in 2016 to 420 by next year, making this a fast-growing area. Listed on Aim, the firm’s shares have been caught up in the market “car crash” and have fallen by 30% in