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For enthusiasts and owners of all Siddeley motor vehicles across the World

Latest News: 05/11/2015 - Autumn Ambles 2015

Welcome to the Armstrong Siddeley Owners Club

Car Of The Month

1936 20/25 Touring Saloon

20/25 Touring

The 20/25 and 25hp models were produced between 1936 and 1939 and were a follow-on from the 20hp models. A total of 892 cars left the factory in both short and long chassis variants but regrettably very few survive (the club is aware of about 30 but many of these are unroadworthy.) The engine was a new 6 cylinder design and had a capacity of 3670cc. It was at this time that the centrifugal clutch was introduced to most Armstrong Siddeley cars and on the 20/25 it was linked to the remote gearbox by a shaft with universal joints at each end. The 25hp model from mid 1937 had the engine, clutch and gearbox in one unit which was rubber mounted to eliminate vibration. This particularly striking example left the factory on 30th June 1936 and was sold by Bond Street to The Honourable A. Lennox-Napier and registered CYY777. The car subsequently went to Scotland but is now with a club member in Germany. More details of its current ownership are available at


The Club

The club aims to make owning or being interested in Armstrong Siddeley Motors’ products, social and engineering history a more enjoyable and rewarding experience. It does this by providing:

Social eventsNovCov

Including car rallies, visits to places of interest and social gatherings. Our flagship event is our annual National Rally & Family Weekend each July. Local area representatives support our UK events. Our members in The Netherlands and Germany regularly organise events in their countries. Our sister clubs, the Armstrong Siddeley Car Club of Australia and the Armstrong Siddeley Car Club of New Zealand, run full programs of events in their countries and are always pleased to see ASOC members attending

Club Magazine

We publish 11 magazines a year, in full colour, known as the Sphinx. These are sent out every month except January by post to all members. A variety of articles are included plus classified adds for members free of charge and commercial advertisements from relevant suppliers.

Spare Parts

Photo of the StoresWe hold the most extensive range of spare parts for Armstrong Siddeley vehicles in the world, having bought the entire stock of the original company. We have an extensive re-manufacturing programme in conjunction with our sister clubs sourcing new stock where available and commissioning refurbishment of items as required in addition to stocking a large quantity of original factory stock and used parts. From time to time the Stores also has knowledge of complete cars for sale as restoration projects. Parts are available to members only, but membership is open to all to join. Our stores are located near Bradford-on-Avon and is open every Monday and Tuesday with a full-time stores manager in attendance. For convenience orders can be placed by phone or email and are dispatched promptly.

Technical expertise and supportInspecting the engine

We hold extensive records of Armstrong Siddeley cars, including build records and parts technical drawings, in addition to a library of general Armstrong Siddeley literature. We also provide model specialist technical helplines for virtually all models to help ensure your car runs smoothly or to provide support for your restoration project.

Car database

Our Membership Secretary holds extensive records of individual Armstrong Siddeley cars and can assist members in tracing the history of their car or in securing its original registration. Information on original specification, delivery date etc. is also frequently available.

MerchandisingASOC umbrellas

The club has extensive merchandise including clothing, literature, badges, and accessories. These are dispatched to order by post.





Armstrong Siddeley and its associated logos are the registered trademarks of the Armstrong Siddeley Owners Club Ltd.


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