He attended Marlborough College, and then Edinburgh University, where he gained a Bachelor of Music degree
After a spell as a teacher of performing arts and sports coach at King"s School in New Zealand, Christie attended the London College of Printing to undertake a postgraduate course in broadcast journalism.
He started his journalism career with the British Broadcasting Corporation in Cambridge, firstly with British Broadcasting Corporation Radio Cambridgeshire, then with British Broadcasting Corporation Look East. In 2003 Christie took up a position as a reporter with Television New Zealand"s ONE News. In 2005 he moved to Television New Zealand"s daily current affairs programme, Close Up.
He has had stints as presenter of Midday, Tonight, Sunday, the New Zealand version of Dragons" Den and Agenda.
In July 2007 Rawdon returned to ONE News and later became Television New Zealand"s first producer / presenter when he took over ONE News at 4:30 in 2009. Christie often presents One News at 6 over the Christmas period, and from 2011-2012 read breakfast news two days a week.
In September 2011 Christie became co-host (with Toni Street) of Television New Zealand"s new Saturday Breakfast show. In May 2012 Christie was promoted as weekday co-host of Breakfast alongside Petra Bagust replacing Corin Dann.