 Hewitt was elected alderman for the Ward of Aldgate in the City of London in April 2012.Shortly after his election he formed the Aldgate Business Forum to act as a vehicle to bring together businesses in the Ward to discuss key issues and to help city-based businesses gain a greater understanding of the City of London and the role of the corporation.Hewitt serves or has served on a number of City of London committees, including Community and Children's Services; The Finance Committee; the City Bridge Trust; the Court of Aldermen's Privileges committee and General Purposes committee as well as the Court of Common Council.