Bagnor is a hamlet close to the town of Newbury in the English county of Berkshire and on the banks of the River Lambourn. It is best known as the home of the nationally famous Watermill Theatre. It was recorded in the Domesday Book as Bagenore.
"Humphrey the Chamberlain holds Bagenore from the King. Wulfeva held it freehold from King Edward. Then it answered for 4 hides; now 1 hide. Land for 3 ploughs: In hardship 1 (plough) 3 villagers and 3 smallholders with 2 ploughs. 1 slave: a mill at 20s meadow 22 acres: woodland at 4pigs".
It is located in the West Berkshire district. The Blackbird, a public house, has stood in the village since the 17th century. It is near the villages of Speen, Donnington, Boxford, and Winterbourne. Donnington Castle lies less than a mile to the east.