Richardson earned a Bachelor's Degree from Queen's University in Kingston, Ontario and a post-graduate journalism degree from the University of King's College in Halifax, Nova Scotia.

He worked for the CBC in Calgary, Alberta until 1997. He then joined ITV in Edmonton and stayed until 2001, at which time he joined Global Television Network in Toronto as host of Focus Ontario. He then joined CTV as parliamentary correspondent and occasional fill in host for Mike Duffy Live. When Mike Duffy left CTV, Richardson anchored On the Hill in that time slot for several weeks.

As parliamentary correspondent, he covered the controversy about confidential documents dealing with the Chalk River nuclear reactor having been left at the CTV news bureau. Richardson was himself quoted as saying the documents "been here in the bureau for six days and we hadn't heard from Natural Resources Minister Lisa Raitt or her office looking for them".

In December 2009 it was announced that in March 2010, he would replace the retiring Max Keeping as news co-anchor at CJOH-TV .