[7] The new building was designed by Sir Edwin Cooper in the Edwardian Graeco-Roman classicist style and built by Messrs John Greenwood.

[2] The town hall, which had served as the headquarters of the Metropolitan Borough of St Marylebone for much of the 20th century, ceased to be the local seat of government when the enlarged City of Westminster was formed in 1965.

[2] The building, which continued to accommodate the Westminster Register Office, hosted the marriage of Cilla Black to Bobby Willis in January 1969, Sir Paul McCartney to Linda Eastman in March 1969 and Ringo Starr to Barbara Bach in April 1981 as well as that of Melanie Griffith to Antonio Banderas in May 1996 and Liam Gallagher to Patsy Kensit in April 1997.

[9] The London Business School acquired the town hall in November 2012[10] and, with financial support from the Ofer family, spent £60 million on refurbishing and improving it.

[11] The improvements, which were designed by Sheppard Robson, included a new glass and steel link structure between the town hall and the library allowing access to the new education facility known as the "Sammy Ofer Centre".