A campaign has already begun to remove the statue of William Beckford, an 18th-century politician, which stands in the Guildhall civic building.
He served twice as former Lord Mayor of London and as a local MP, and amassed a fortune through his ownership of plantations and thousands of slaves in Jamaica.
A petition launched earlier this year to remove Beckford's statue claimed such monuments "glorify figures who profited from slavery, something that should not be associated with London, or its 'traditional liberties'".
The petition was submitted to parliament but rejected because the issue of monuments is one for local authorities and private landlords.
However, a school in north London named after Beckford is now changing its name.
(Writers & Editors: AR/PHZ/WDB, Agence France-Presse)