On 16 June 2007 Barnett presented her first radio programme on
LBC 97.3, when she stood in for
Chris Hawkins on Saturday afternoon. Barnett soon returned to the air filling in for more presenters, including
Jim Davis' Lifestyle show. As part of a new Sunday schedule she was given a new 2-hour programme talking about food. A further change on 7 January 2008 saw Barnett move to weekday afternoons, 1 to 4pm, as part of the new weekday line up. The programme is a topical debate featuring aspects of news and views, in which the public are encouraged to call in with their views. Barnett continued to present the Sunday Food programme as well as the new weekday afternoon programme until 20 January 2008 when
Bill Buckley replaced her on Sundays so she could concentrate on the weekday programme. Her weekday programme ended in September 2010. Between January 2011 and September 2013, she presented a Sunday morning show on
BBC London 94.9, and occasionally stands in for Allison Ferns and Danny Pike on BBC Sussex. In 2014/2015 she occasionally covered for Julia George on BBC Radio Kent’s mid-morning programme. ==2009 MMR vaccine controversy==