Question:
Who was the chair of ITV plc in Mar, 2005?

Context:
 Michael Grade is the chair of ITV plc from Jan, 2007 to Jan, 2009. 
 Archie Norman is the chair of ITV plc from Jan, 2010 to May, 2016. 
 Peter Burt is the chair of ITV plc from Jan, 2004 to Jan, 2007. 
 Peter Bazalgette is the chair of ITV plc from May, 2016 to Dec, 2022.

Answer:
Peter Burt