Uxbridge was a district in the west of London.
Roughly to the north of Uxbridge was Amersham, to the north-east was Ruislip and roughly to the south-east was Ealing. (TV: Revenge of the Slitheen)
In the 2000s, the London branch of Coldfire Construction, which was secretly operated by the Slitheen, built a technology block in an Uxbridge school, using it as a transducer to absorb energy from the Sun and destroy the Earth so they could sell it off. After Sarah Jane Smith foiled the Slitheen at Park Vale Comprehensive School, Ealing, she called UNIT so they would clear up the Coldfire sites across the world. (TV: Revenge of the Slitheen)