English units are the historical
units of measurement used in
England up to 1824, which evolved as a combination of the
Anglo-Saxon and
Roman systems of units. Various standards have applied to English units at different times, in different places, and for different applications. The units were redefined in the
United Kingdom in 1824 by a
Weights and Measures Act, which retained many but not all of the unit names and redefined some of the definitions.