Lasdun Online is a major new scholarly publication on British modernist architect Sir Denys Lasdun, being conducted by the University of Liverpool's Department of Architecture and the Royal Institute of British Architects' (RIBA) British Architectural Library Drawings, Archives and Photographs Collections. In the 1960s, Lasdun (1914–2001) was Britain's most admired architect. All his work was published internationally, and his National Theatre building represented the high-point of Welfare-State expansion into the arts. This prominence later drew the fire of British postmodernist polemics. Lasdun Online exploits his rich, newly catalogued archive at the RIBA, providing a substantial online scholarly monograph: a searchable, illustrated catalogue raisonné of all his known projects, accompanied by detailed essays examining key themes of Lasdun's career in their historical context.

Barnabas Calder is a specialist on post-1945 architecture, and in particular, the work of Sir Denys Lasdun. He is a senior lecturer in architecture at the University of Liverpool. He studied modern history (BA) at Oxford; history of art and architecture (MA) at the Courtauld Institute, London; and history of architecture (PhD) at Cambridge. Having completed his doctoral thesis on Lasdun's National Theatre, he went on to spend two years at the RIBA Drawings Collection, cataloging and researching Lasdun's archive, then held a lectureship at the University of Strathclyde for five years before taking up his current post. He is a trustee of the Twentieth Century Society, and author of Raw Concrete: The Beauty of Brutalism (William Heinemann, 2016).