 The two were united in 1957 to form the present civil parish which covers an area of .The parish's straight eastern boundary with Whaddon follows the Roman Ermine Street (now the A1198), and its northern boundary with Croydon and Arrington follows the winding course of the River Cam.Its south and western borders with Bassingbourn, Abington Pigotts, and Steeple Morden largely follow field boundaries.