Addison Motor Company
A historic English automobile company based in Liverpool that produced and sold early cars, tri-cars, and motorcycles.
Last updated August 25, 2026
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Overview
Addison Motor Company was an English automotive business based in Liverpool during the formative period of motor manufacturing in the United Kingdom. The company is associated with the production and sale of early automobiles and tri-cars, as well as a short-lived motorcycle operation. Its documented activities place it within the early twentieth-century expansion of powered road transport, when small manufacturers competed through lightweight vehicles, local dealerships, engineering experimentation, and participation in motor shows and hill-climbing events. The company’s best-documented technical product was a 6 1/2 horsepower two-cylinder vehicle. Its engine used variable-lift inlet valves, an engineering feature that allowed the intake arrangement to be adjusted and was presented as part of the vehicle’s technical appeal. Promotional language described the Addison as “the Mercedes of the tri-car world,” positioning the product as a comparatively refined or capable entrant in the emerging tri-car market. The company also produced motorcycles in 1904 and 1905, although the available historical material does not establish the full model range, production quantities, or the precise scale of that activity. Addison vehicles received public exposure at the ninth Liverpool Motor Show, where the company displayed both a touring car and a tri-car. The Motor reported that these vehicles were well received, providing evidence that Addison sought recognition through the organized motor-show circuit rather than relying solely on local sales. Competition and sporting demonstrations were another part of its public profile: an Addison tri-car won a silver medal in a hill-climbing contest organized by the University of Liverpool Motor Club on 13 July 1905. The company’s commercial activities extended beyond vehicles manufactured under the Addison name. In January 1912, reports stated that the business had become sufficiently successful to require a separate showroom at 7 Berry Street in Liverpool for Alldays and Phoenix cars. The company also sold the Speedwell, indicating that its business model included dealership or distribution activities alongside its own branded production. The available sources do not clarify the contractual relationship between Addison and these other marques, nor do they establish whether every vehicle sold through the business was manufactured by Addison. James Harold Atherton was the company’s sole proprietor and works manager from 1903 until 1918. His combined ownership and operational role is the clearest documented leadership fact in the company’s history. Around 1922, the business expanded into a larger garage, suggesting that an automotive retail, servicing, storage, or distribution operation remained active at that point. However, the available reference material does not provide a definitive closure date, a detailed account of the company’s later ownership, or enough information to determine whether the business continued under another name. Addison Motor Company is therefore best treated as a historically documented British automotive company with an incompletely recorded later history.
History
Addison Motor Company was an English automobile company located in Liverpool. It operated during the early development of the British motor industry, a period when manufacturers experimented with compact vehicles, three-wheeled designs, lightweight engines, and motorcycle-derived technology. The surviving account identifies James Harold Atherton as the company’s sole proprietor and works manager from 1903 through 1918, but does not provide a confirmed incorporation or founding date. The company’s principal documented engineering product was a 6 1/2 horsepower two-cylinder vehicle equipped with variable-lift inlet valves. Addison promoted this machine as “the Mercedes of the tri-car world,” a comparison intended to associate it with quality and technical distinction within the small three-wheeled vehicle sector. The business also produced motorcycles in 1904 and 1905. Details such as motorcycle model names, output, engine specifications, and production facilities are not established by the available material. Addison participated in the public display and competitive culture of early motoring. At the ninth Liverpool Motor Show, the company showed an Addison touring car and an Addison tri-car. The Motor described the exhibits favorably, suggesting that the company had achieved at least some recognition among contemporary motoring observers. On 13 July 1905, an Addison tri-car competed in a hill-climbing contest organized by the University of Liverpool Motor Club and won a silver medal. Such events served both as tests of vehicle performance and as promotional opportunities for small manufacturers. The company’s commercial role was broader than manufacturing under its own name. A January 1912 report stated that Addison had become successful enough to open a separate showroom at 7 Berry Street in Liverpool for Alldays and Phoenix cars. Addison also sold the Speedwell. These references indicate that the business functioned as a retailer, distributor, or agent for other marques, although the available sources do not specify the exact legal or commercial arrangements. They also do not establish whether the Alldays, Phoenix, and Speedwell vehicles were built at Addison facilities; they should therefore be treated as marques sold by the company rather than confirmed Addison-manufactured products. Atherton’s documented tenure as proprietor and works manager ended in 1918. Around 1922, the business expanded to a larger garage. This later expansion suggests that the enterprise remained involved in some aspect of the motor trade after its earlier manufacturing and showroom activities, possibly including vehicle sales, repairs, storage, or distribution. The sources supplied do not identify a definitive closure date, successor company, or final product range. Consequently, the company’s early history is clearer than its later fate: Addison is securely associated with Liverpool, early cars and tri-cars, limited motorcycle production, motor-sport participation, and the sale of several other automobile marques.
- 1922
Garage expansion
[1]Around 1922, Addison expanded to a larger garage.
- 1918
End of Atherton’s documented tenure
[1]The available account records Atherton as proprietor and works manager through 1918.
- 1912
Separate Berry Street showroom reported
[1]A separate showroom at 7 Berry Street, Liverpool, is reported for Alldays and Phoenix cars.
- 1905
Tri-car wins a silver medal
[1]An Addison tri-car wins a silver medal at a University of Liverpool Motor Club hill-climbing contest on 13 July.
- 1904
Motorcycle production begins
[1]Addison is documented as producing motorcycles during 1904–1905.
- 1903
Atherton begins documented leadership tenure
[1]James Harold Atherton is recorded as Addison Motor Company’s sole proprietor and works manager from 1903.
Products and positioning
An early British automotive manufacturer and Liverpool-based motor business combining small-vehicle production, sporting participation, and dealership activities.
Tri-car
Addison 6 1/2 hp tri-car
The best-documented Addison vehicle was a 6 1/2 horsepower two-cylinder tri-car. Its engine used variable-lift inlet valves, an unusual technical feature for a small early motor vehicle. Addison marketed it with the ambitious phrase “the Mercedes of the tri-car world.” The model was displayed at the ninth Liverpool Motor Show and later achieved a silver medal in a University of Liverpool Motor Club hill-climb in July 1905.
Automobile
Addison touring car
An Addison touring car was exhibited alongside the company’s tri-car at the ninth Liverpool Motor Show. Contemporary reporting described the Addison displays favorably, but the available historical material does not provide the touring car’s engine specification, body configurations, production volume, price, or complete production period.
Motorcycle · 1904
Addison motorcycles
Addison produced motorcycles in 1904 and 1905. The surviving reference confirms the production period but does not identify individual model names, technical specifications, quantities, or the reasons the motorcycle activity appears to have been limited to those years.
Distributed automobile marque
Alldays cars
Addison operated a separate Liverpool showroom for Alldays cars by 1912. The available evidence supports Addison’s role in selling or representing the marque, but does not establish that Alldays vehicles were manufactured by Addison Motor Company.
Distributed automobile marque
Phoenix cars
Phoenix cars were among the vehicles handled through Addison’s separate showroom at 7 Berry Street in Liverpool in 1912. The surviving account does not clarify the dealership agreement or the range of Phoenix models sold.
Distributed automobile marque
Speedwell cars
Speedwell is identified as another automobile marque sold by Addison Motor Company. No further details about the models, dates, or commercial arrangement are provided in the available reference.
Brand decisions
1922
Expand to a larger garageStrategyBackground
The company remained involved in the motor trade after the period in which Atherton is documented as proprietor and works manager.
Action taken
Around 1922, Addison expanded to a larger garage.
Aftermath
The expansion suggests continuing or growing automotive sales, servicing, storage, or distribution activity, but the sources do not specify the precise function of the new premises.
1912
Open a separate showroom for Alldays and Phoenix carsStrategyBackground
A contemporary report stated that Addison had become sufficiently successful to require additional showroom space in Liverpool.
Action taken
The company opened a separate showroom at 7 Berry Street for Alldays and Phoenix cars.
Aftermath
The move indicates an expansion of Addison’s retail or distribution operations beyond its own branded vehicles. The available material does not provide financial results or later showroom performance.
Sources1 sources
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