Bayfordbury House was originally built between 1759 and 1762 for well-to-do London merchant
Sir William Baker. It was upgraded to its present appearance by his son, also
William Baker between 1809 and 1812. After the death of Admiral Sir
Lewis Clinton-Baker in 1940, the estate was leased to the
Dr Barnardo's charity. The 372-acre Bayfordbury estate was then bought by the
John Innes Centre in 1948 and developed into a School of
Cytology. A new Cell Biology building was built in 1959, later to become the Science Learning Centre. In 1967 the John Innes Centre moved to its present site in
Norwich and the Bayfordbury estate was bought by the Hertfordshire Council in 1967 for the use of
Hatfield Polytechnic. == Bayfordbury Observatory ==