This article by Stephen Gilburt was first published by The Enfield Society in newsletter 177, Spring 2010. Arnos Grove is a Grade II* listed building and is occasionally open by prior arrangement.
In 1928, as Northmet House, Arnos Grove became the headquarters of the North Metropolitan Electric Power Supply Company and later, as Southgate House, offices for the Legal and General Insurance Company. It is now the Southgate Beaumont, a residential care centre run by Barchester Health Care. Extensions and alternations have been made by the various twentieth century owners.