 In 1941, during the Second World War the Central Ordnance Depot was built along with the Bicester Military Railway to link it with the Varsity Line of the London, Midland and Scottish Railway west of .The depot is now run by the Defence Support Group.Arncott Bridge across the River Ray on the road between Arncott and Ambrosden is a five-arched bridge built in the 18th century.