The Terror of Sally Sparrow is a gargantuan, socially progressive nation, renowned for its absence of drug laws and spontaneously combusting cars. The hard-nosed, hard-working, democratic population of 27.868 billion Sparrows live in a state of perpetual fear, as a complete breakdown of social order has led to the rise of order through biker gangs.

The medium-sized, liberal, pro-business, outspoken government juggles the competing demands of Law & Order, Public Transport, and Education. Citizens pay a flat income tax of 25.9%.

The strong Sally Sparrow economy, worth a remarkable 1,151 trillion Pounds a year, is quite specialized and led by the Trout Farming industry, with major contributions from Basket Weaving, Pizza Delivery, and Woodchip Exports. Average income is 41,326 Pounds, but there is a vast disparity between incomes, with the richest 10% of citizens earning 280,967 per year while the poor average 2,220, a ratio of 126 to 1.

Crime is a serious problem. Sally Sparrow's national animal is the Angel, which frolics freely in the nation's many lush forests.

Sally Sparrow is ranked 185,232^nd in the world and 8^th in The Doctor Who Universe for Most Developed, scoring 53.21 on the Human Development Index.