Beckton Gasworks was a major London gasworks built to manufacture coal gas and other products including coke from coal. It has been variously described as 'the largest such plant in the world' and 'the largest gas works in Europe'. It operated from 1870 to 1976, with an associated by-products works that operated from 1879 to 1970. The works were located on East Ham Level, on the north bank of the Thames at Gallions Reach, to the west of Barking Creek.