Tiny Rebel was founded in Newport in 2012 by brothers-in-law Bradley Cummings and Gareth Williams. Williams had learned to homebrew with his grandfather, and introduced his brother-in-law to the hobby. After brewing in Cumming's father's garage for a number of years, the pair decided to make their hobby their profession. They rented an industrial unit in the Maesglas area of the city.

The company opened their £2.6million brewery and bar in Rogerstone on 1 July 2017.