公债
As a backbencher, Field introduced several high-profile debates on issues of local and national importance such as homelessness, Northern Ireland, Government debt, Heathrow airport, policing in London, social housing, home education and population estimates. He has run local campaigns on business rates, St Bartholomew's Hospital, assisting the creative industries, the control of rickshaws in the West End, social housing rent rises, the independence of the City of London Police (including its fraud detection expertise) and, in July 2011, successfully argued in Parliament for the Department of Culture, Media and Sport's continuing control of the Royal Parks.