Brompton Bicycle
British manufacturer of folding bicycles
Brompton Bicycle Limited, trading as Brompton, is a British manufacturer of folding bicycles based in Greenford, London.
The Brompton folding bicycle and accessories are the company's core product, noted for its self-supporting compact size when stored. All available models of the folding bicycle are based on the same hinged frame and ETRTO 35-349 mm (16-inch) tyre size. Components are added, removed, or replaced by titanium parts to form the many variations. The modular design has remained fundamentally unchanged since the original patent was filed by Andrew Ritchie in 1979, with small details being refined by continual improvement. Ritchie was awarded the 2009 Prince Philip Designers Prize for work on the bicycle.
Brompton is the largest volume bicycle manufacturer in Britain, producing approximately 50,000 bicycles each year. The company's bicycles are also available for hire.
Design
All Brompton folding bicycle models share the same curved frame, consisting of a hinged main tube, pivoting rear triangle, fork, and hinged handle-bar stem. The main tube and stem are made of steel in most models.
“Brompton Bicycle” enters the record as british manufacturer of folding bicycles. Crown Archives preserves that source wording while asking what Brompton, Bicycle and British can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jun 30, 2026. The linked authority identifier is Q926943. 2 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1979 and 2009.
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This entry incorporates text from “Brompton Bicycle” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.