"The H.E.C Power Cycle, manufactured by Hepburn Engineering Co (H.E.C) of Kings Cross, London, was fitted with an 80cc deflector-top two-stroke engine made by Levis. The machine made its debut at the Earls Court Show in November 1938 and went on sale in 1939, with a LEVIS badge on the engine. The engine was updated later that year, ready for the 1940 season, and the Levis badge on the engine was replaced with an H.E.C badge (as on this particular machine). However, sales were short-lived. With the outbreak of war, the company relocated to Birmingham. But, on 3rd May, 1940, the HEC factory in Thorpe St, Birmingham was bombed. No more autocycles were built, and Levis and HEC merged to manufacture air-compressors. Very few Levis/H.E.C autocycles were manufactured, and even fewer of the H.E.C badged examples survive." (from buyvintage1.wordpress.com)
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