been centered in Preston (UK) under the management of David Miller; the current frame builder is Paul Riley. Jack Denny was born in 1906 and died in 1991. Alf Hetchin was born 24 Sept. 1923 and died at the age of 72, a few years after Jack Denny. Hetchin's Lightweights continues to produce bespoke lugged-steel bicycle frames. Approximately 12,000 frames have been produced to date (2015), counting from 1934, of which some 16% are known to have survived. The frames are highly sought by collectors. Notes References External links Hetchins Bicycles: Meticulously Lugged on Ebykr Cycle manufacturers of the United Kingdom Manufacturing companies based in London