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

Latest News: 01/06/2016 - Issues With The Latest Sphinx

Welcome to the Armstrong Siddeley Owners Club

Car Of The Month

1929 30HP Mk2 Shooting Brake UL10


The Armstrong Siddeley marque came into existence in 1919 with the merger of the Sir W G Armstrong Whitworth Engineering Company and the Siddeley-Deasey Motor company and the first model produced under the Armstrong Siddeley name was the 30hp. This was a large limousine-type of car favoured by Royalty and the ruling classes. It had a 5-litre engine with overhead valves much like various American cars of the period. A total of 2725 30hp cars were produced with Mk1, Mk2 and Mk3 versions between 1919 and 1932 with some being exported around the world. This club is currently only aware of some 8 surviving examples worldwide.

The first owner of this particular important car in 1928 was HRH The Duke of York who later became King George VI. The car was purchased for use on the Royal Balmoral estate in Scotland. The Duke was a great fan of Armstrong Siddeley cars having owned several in the twenties. The car was later sold in 1932 but remained on the Balmoral estate. The third owner was Sir Aymer Maxwell, in whose family it stayed from 1936 until 2015 by which time it had been bequeathed to Sir Michael Maxwell, 9th Baronet of Monreith who described its performance as “exhilarating and exciting rather than competitive, but it will hold eight in the back and two up front”.

The car was totally refurbished in the 1990s whilst on loan to Neil Corner for use on his grouse moor.

Latterly and for many years this magnificent car was loaned to HM The Queen’s Sandringham Motor Museum where it was one of the most popular exhibits. Due to ill health Sir Michael Maxwell decided to sell the car in 2015. The new lucky owner and club member who purchased it lives in USA and it joins his collection of other Armstrong Siddeley cars where it is getting the proper care and attention that this highly important and historic car merits.

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 eventsJulySphinx

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. To read the current edition of Sphinx, club members can click on 'Members Home' in the "Your Account" box on this page and then select

Sphinx from the "Downloads" box and happy reading.

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.