thumb|right|250px|1931 Austin 7 Swallow saloon

The '''Swallow Sidecar Company''' was founded on 4 September 1922 by two friends, William Walmsley (b. 1891) and William Lyons (b. 1901). Both families lived in the same street in Blackpool, England. Walmsley had previously been making sidecars and bolting them onto reconditioned motorcycles. Lyons had served his apprenticeship at Crossley Motors in Manchester before moving to Brown and Mallalieu as a junior salesman.<ref>[http://www.fundinguniverse.com/company-histories/Jaguar-Cars-Ltd-Company-History.html] (Retrieved 18 July 2007)</ref>

Lyons, having recognised the commercial potential for these sidecars, joined Walmsley and together they obtained premises in Blackpool with the assistance of a £1000 overdraft. With a small team of employees they were able to begin commercial production of the motorcycle sidecars.<ref>[http://www.jaguar-enthusiasts.org.uk/jaguar-history.html] Jaguar Enthusiasts ''Jaguar History'' (Retrieved 18 July 2007)</ref>

In 1926 the company diversified, changing its name to the '''Swallow Sidecar and Coachbuilding Company''' and moved into the car coachwork business.<ref>[http://www.jag-lovers.org/early.html] Jag-Lovers ''Early Days'' (Retrieved 1 December 2006)</ref>  The first car that Lyons and Walmsley worked on was the Austin 7, a popular and inexpensive vehicle. Lyons had persuaded a dealer in Bolton, Lancashire to supply him with an Austin 7 chassis and commissioned Cyril Holland, a coachbuilder from the Midlands, to create a distinctive, open tourer body. The result was the 1927 Austin Seven Swallow.

Priced at only £175, the Swallow, with its brightly coloured two-tone bodywork and a style that imitated the more expensive cars of the time, proved popular at a time of financial hardship for many. Soon after, a saloon version was produced: the Austin Seven Swallow Saloon.

In 1927 the sidecar was dropped from the name, and it became the '''Swallow Coachbuilding Company'''.<ref>[http://www.cartype.com/page.cfm?id=1884&alph=ALL&dec=ALL] CarType ''Standard Swallow Logo'' (Retrieved 1 December 2006)</ref>

The increasing demand for Swallows made it necessary to move the company closer to the heart of the British car industry and so, in 1928, they moved to a part disused World War I munitions factory at Holbrook Lane, Coventry. Business continued to grow and in 1929 the company was sufficiently confident to go to the expense of taking a stand at the London Motor Show.

Three new Swallow models appeared in 1929, based on Standard, Swift, and Fiat chassis.

thumb|right|250px|1931 Austin 7 Swallow saloon 

'''スワロー・サイドカー・カンパニー'''(Swallow Sidecar Company)はモーターサイクル・サイドカー製作のために1922年9月4日に設立。ウィリアム・ライオンズ(William Lyons)は、1921年、20歳の時にウォルムズレーと出会い、ウォルムズレーのサイドカー製作に魅せられていた。ライオンズは、ウォルムズレーと仕事をするまではマンチェスターのクロスレー・モータース(Crossley Motors)で見習いとして働いていた。

1926年、会社は乗用車のコーチワークをおこなうようになり'''スワロー・サイドカー・アンド・コーチビルディング・カンパニー'''(Swallow Sidecar and Coachbuilding Company)と社名を変更。最初におこなったのはタルボットのボディを彼らのボディで置き換える仕事だった。これが評判となり自信をつけ、その後は主にスタンダード、スイフトなどを手がけるようになる。1927年、社名からサイドカーをはずし、'''スワロー・コーチビルディング・カンパニー'''(Swallow Coachbuilding Company)とした。

ビジネスが軌道に乗り、依頼を受ける企業からもっと近くへ来るよう要請され、1928年、英国自動車業界の中心地、コベントリーへ移転。ウォルムズレーはこの機会に引退。会社は成長をつづけ、1929年にはロンドンモーターショーに出展するだけの企業となっていた。

1930年には様々なシャーシにボディを乗せていたが、1931年ジャガー(Jaguar Cars Ltd)となる。