Core Design Limited was a British video game developer based in Derby. Founded in May 1988 by former Gremlin Graphics employees, it originally bore the name Megabrite until rebranding as Core Design in October the same year. The company was acquired by umbrella company CentreGold in December 1994, which in turn was acquired by Eidos Interactive in April 1996. In May 2006, the Core Design personnel and assets were acquired by Rebellion Developments, and the company became Rebellion Derby, which was then shut down in March 2010.

Derby is a city and unitary authority area on the River Derwent in Derbyshire, England. Derbyshire is named after Derby, which was its original county town. As a unitary authority, Derby is administratively independent from Derbyshire County Council. The population of Derby is 263,490 (2022).