[1] An extension to a design by F. J. Lenton involving veranda type ward blocks was completed in 1935 and, after the hospital had joined the National Health Service in 1948, a new maternity department was added in 1972.

[1] The hospital achieved notoriety when nurse Beverley Allitt was convicted of killing four young patients and harming nine others with injections in the early 1990s.

[2][3][4] Due to low number of mothers having babies in Grantham, the trust decided to close the birthing unit in February 2014.

A local campaign was begun to petition for the saving of the structure, which Private Eye described as "the most impressive and interesting building on the site".

In April 2021 a judicial review at the High Court ruled that the United Lincolnshire Hospitals NHS Trust did not consult properly on their plans for a 'green site' there, because they thought there would be too much resistance to it.