Borrowash is a village in the Erewash district of Derbyshire, England, situated immediately east of the Derby city boundary. The appropriate civil parish is called Ockbrook and Borrowash.

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).