I don't believe they made sewing machines, although other car manufacturers went that route - for example, at one time in my childhood, the family car, my mother's sewing machine, and my sister's bike, were all made by Swift of Coventry.
But as far as I know, Starley and Sutton were founded in 1878 to make bicycles. Their most successful model was the "Rover", which set the pattern for the modern bicycle in 1885. In fact, it was so successful that the company's name was changed to Rover in the 1890s. They expanded into motorcycles early in the twentieth century, and in 1904 cars, but bikes and motorbikes continued more or less until the Great Depression.
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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