"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 3 villagers and 3 smallholders with 2 ploughs. 1 slave: a mill at 20s meadow 22 acres: woodland at 4 pigs".
Bagnor forms part of the civil parish of Speen, which is itself part of the district administered by the unitary authority of West Berkshire.
Watermill Theatre
The Watermill Theatre is a privately owned repertory theatre that has operated since 1981. It is a converted watermill with gardens beside the River Lambourn, and seats 220 people. It retains many of its original architectural features including the waterwheel, which can be viewed through a glass screen on entering the auditorium. Many successful actors have begun their careers at the Watermill Theatre, most notably Sean Bean, Bill Nighy and David Suchet. It is one of only five theatres to have been awarded a National Touring remit by Arts Council England, and previous productions have subsequently moved to Broadway and the West End.
Bagnor Manor
Bagnor Manor is a country home standing near the centre of the village. The house in its current form dates from the 17th century. Previously the manor and its estate had been held for the Crown, and was recorded in the Domesday Book. Ownership was later transferred to Henry de Bagenore, who sold the property to the Priory and Convent of Poughley in 1232. The transfer was agreed in return for a yearly payment of 8 marks, food and clothing for Henry's two sons, and an agreement that the Prior would find a suitor for his youngest daughter, Celestria. The priory was dissolved in c.1524 and its lands seized by Henry VIII. The Manor was granted to Wolsey College, Oxford in 1531. Bagnor Manor was later transferred to the Dean and Chapter of Westminster in return for lands in St. James's Park. They built the present Grade II listed building in the 17th century, but the estate did not pass into private ownership until 1871, when it was purchased by a wealthy family from Donnington Grove. Until 2007 it was home to the art collector and property developer Baron Palumbo, who installed many artworks in the house and grounds. It is now a private residence, owned by Philip Lever.
Notable residents
A number of notable individuals have lived in the village or its immediate surroundings. They include:
Jill Fraser, theatre owner and director, who was artistic director of the Watermill Theatre from 1981–2006.
Lord Hanson, industrialist, who lived on the outskirts of the village.
Jack HargreavesOBE, television presenter and author, who bought and converted Brook House on the Winterbourne in 1948, moving on to Lymington in 1960.