Dethick, Lea and Holloway is a civil parish, in the Amber Valley borough of the English county of Derbyshire. The population of the civil parish taken at the 2011 census was 1,027.It is located in central Derbyshire, south east of Matlock, and, as its name suggests, contains the three main settlements – Dethick, Lea and Holloway, as well as the younger village of Lea Bridge.