Squire is a British manaufacturer of motorcycle sidecars that pioneered the design of the modern motorcycle trailer

Motorcycle trailer

Motorcycle trailer is a term used to describe a trailer used either to carry motorcycles or to be pulled behind a motorcycle in order to carry additional gear.-For carrying motorcycles:...

 for being pulled behind a bike in the early 1980's. In 1988 Squire merged with the struggling Watsonian company to form Watsonian-Squire

Watsonian Squire

Watsonian Squire is a British manufacturer of sidecars and trailers for attachment to motorcycles. The company was established in 1912 by Thomas Fredrick Watson as the Patent Collapsible Sidecar Company Ltd. at Balsall Heath, Birmingham, England. The company is also the United Kingdom distributor...

, now the UK's largest sidecar producer.
In 2002 Motor Cycle News set a Guinness World Record for a motorcycle and trailer reaching a timed speed of 139.5mph at Millbrook

Millbrook, Bedfordshire

Millbrook is a small village and civil parish near Bedford. It has a population of 130. Millbrook railway station, on the Marston Vale Line is about two miles from the village....

 in Bedfordshire, UK, pulling a Squire D21 trailer behind a Kawasaki ZZ-R1100 motorcycle.