The rise and fall of the Department of Economic Affairs (DEA) parallels the promised but eventually unfulfilled modernization agenda of the 1964-6 Wilson government. The diary kept by Samuel Brittan (in contravention of civil service rules) for the fourteen months in which he served as an 'irregular' in the DEA provides a unique source for understanding the growth ambitions of the new government and why they quickly ran into the sands. Published here...