Aston-Butterworth was the project instigated by former motorcycle racer Bill Aston, and engine builder Archie Butterworth. Aston built a chassis which was a copy of a Formula Two Cooper, fitted with a flat-four 1983 cc AJB engine devised by Butterworth. Two cars were built, NB41 and NB42. The NB42 car driven by former 500cc racer Robin Montgomery-Charrington appeared in the 1952 Belgian Grand Prix, when he qualified 15th and was seventh when he came to refuel, but wrong mixture was poured into the tank. In non-championship events Montgomery-Charrington finished 3rd in Chimay in a large field of privateers. Bill Aston himself drove the NB41 in German and Italian Grand Prix, but retired at Nurburgring and did not qualified at Monza.
| Season | Series | Event |
| 1952 | F2WC | Belgian GP |
| Driver | No. | Entrant |
| Robin Montgomery-Charrington | 40 | R. Montgomery-Charrington |
| Scale | Manufacturer | Collection |
| 1:43 | Racing Dioramics | |
| Cat. No. | Quality | Rarity |
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| Formula143 Special Edition |
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