After graduation Emma Crosby joined the BBC becoming a producer on its rolling news channel, BBC News 24. Moving on from there, she worked for News Direct 97.3 and LBC before joining The Money Channel in 1999.
In 2001, Emma Crosby joined CNBC Europe and became a presenter on European Market Wrap. She also spent some time in the United States while with the network and reported for its early morning show Squawk Box, where her mentor was Maria Bartiromo.
Emma Crosby joined Sky News in 2003, presenting the early morning news programme Sunrise. She also regularly co-presented the channel’s weekday Sky News Today, and some weekend broadcasts. She won a BAFTA for coverage of the 2007 Glasgow Airport terrorist attack. She latterly was also the channel’s business correspondent, and in October 2007 became a London correspondent on the Fox Business Network.
In January 2009 Emma Crosby moved to the long running breakfast station GMTV, on a reported salary of £120,000, replacing departing presenter Fiona Phillips, who quit for family reasons after 16 years. On 1 August 2010 it was announced that Emma was leaving GMTV, with the impending launch of Daybreak which replaced GMTV. Emma Crosby co-presented the show with Andrew Castle on alternate Wednesdays, Thursday and Fridays. During her time with the show, Emma had co-presented alongside Ben Shephard, John Stapleton and Kate Garraway. Emma Crosby and Andrew presented the final edition of GMTV on Friday 3 September 2010.
In October 2010, she confirmed that she would present on CNN, before returning to BBC News. She began presenting on the BBC News Channel’s weekend evening slot on 23 October 2010, before moving on to afternoons the following week. On 5 November 2010, when the BBC News schedule was disrupted due to a 48-hour NUJ strike, Emma Crosby presented the BBC News at One, and the afternoon schedule on the BBC News Channel.
In February 2011, she was appointed a presenter of 5 News as a replacement for Natasha Kaplinsky, presenting the 18:30 edition from 14 February. She now also presents the earlier 17:00 edition following the departure of Matt Barbet on 26 July 2012.
On 28 April 2014, Emma Crosby began co-hosting a new programme called 5 News Tonight alongside 5 News returnee Matt Barbet.
On 5 November 2015, Emma announced she is leaving Channel 5 to have a baby.