Pod koniec roku firma została wykupiona przez Davida Browna, właściciela marki Aston Martin.
Lagonda 2½-Litre Mk 1 cars are made from September 1946. After a few cars had been produced the company was taken over by David Brown. It is claimed to be Britain's only production car with independent front and rear suspension. Early production had a Cotal four-speed electro-magnetic epicyclic gearbox. This became an extra-cost option when a David Brown synchro-mesh gearbox was made standard equipment.