Marsh was working at Stringfellows when she appeared in a programme about Essex Wives in 2002. This led to a number of modelling jobs. She has subsequently participated in many reality television shows, including Trust Me – I’m A Holiday Rep, Channel 4’s The Games, and E4’s Fool Around… with Jodie Marsh on two occasions.

In 2004, Marsh sold a story to the News of the World claiming that she had had a sexual liaison with Chelsea F.C. midfielder Frank Lampard. Lampard denied the claims and filed a complaint with the Press Complaints Commission. The complaint was not upheld and Marsh clarified they had done everything but intercourse and four other men had been involved.

In 2005, Marsh published her autobiography Keeping It Real. The hardback was released in 2005, followed by a paperback version in 2006. The hardback version reached the top 10 on the best-sellers list.

Marsh won a celebrity version of The Weakest Link in 2006. Marsh had a cameo role in the first episode of Channel 4’s Friday night comedy showThe Kevin Bishop Show.

In January 2006, Marsh appeared on Celebrity Big Brother 4. On 13 January, she was the first to be voted out of the house — with 8 out of 10 possible nominations from her fellow housemates, and 42% of the public vote.

Marsh wrote a weekly column for celebrity gossip magazine Sneak until its closure in August 2006 and was previously Zoo Weekly magazine’s “sexpert”, advising men on sex-related issues. Her choice as an agony aunt angered some established professionals. She defended herself against these claims stating, “I haven’t exactly got a degree in psychology but I just love sex, don’t I?”

In December 2006, Marsh announced her engagement to Brentwood DJ David Doyle, after dating for 11 days. Eschewing the traditional engagement ring, Marsh instead tattooed Doyle’s full name on her hand and the couple appeared together in OK! magazine announcing their plan to marry in a fetish ceremony in a dungeon. The relationship ended between late December and mid-January 2007 with Doyle blaming Marsh’s constant drinking and poor personal hygiene. Marsh, however, claimed Doyle had been unfaithful. In 2008, Marsh publicly began a relationship with a female hairdresser called Nina and photographs of the two on a number of dates were published in magazines and newspapers of the time. In the November issue of the UK edition of Star magazine, Marsh gave a full interview about their relationship and recreated the iconic Vanity Fair front cover depicting Cindy Crawford shaving k.d. lang. In July 2012, Marsh started dating Kirk Norcross in a two-week relationship, posting intimate pictures on Twitter, which ended after it was claimed that she had refused sex with Norcross.

Marsh appeared as a contestant in Channel Five’s reality show The All Star Talent Show, hosted by Myleene Klass and Andi Peters. Following this, Marsh began presenting her own series, Get A Life for Living TV on 1 March 2007. It was cancelled after two episodes.

In May 2007, the website Marry Me Jodie Marsh was launched with the teaser “I’m getting married this September… Only problem is that I don’t have a man!” Men were invited to submit an application for a series of open auditions for the chance to marry Marsh that September. MTV filmed the search and subsequent wedding.

The reality series featuring Marsh entitled Totally Jodie Marsh: Who’ll Take Her Up the Aisle?, premiered in July 2007 documenting Marsh’s search to find a husband. Marsh eventually chose Matt Peacock, an ex-boyfriend of fellow glamour model Jordan.

The couple married on 1 September 2007. A second ceremony at her mothers home was shown on MTV on 2 September 2007. They decided to separate in December 2007. Marsh later admitted to Love It in their 8 January 2008 issue that “.. the marriage was for TV. It was never for real” and “I’m not hiding the fact I did the TV show for money. Of course I did”.

In its second UK series, Marsh showed viewers around her home on MTV’s Cribs in 2008. Also in 2008, Marsh appeared on Channel 4’s documentary It’s Me or the Dog. She was given training tips at home to deal with her six dogs.

In June 2009, Marsh appeared on the cover of Zoo magazine for the first time, and in a number of subsequent issues.

On 29 September 2010, Marsh appeared in the one-off documentary Jodie Marsh Tattoo Apprentice which was screened on the channel DMAX.

At the end of January 2010, Marsh was featured on LA Muscle TV in an hour long show called 6 pack in 4 weeks. Jodie’s work on the show resulted in a photo shoot for Muscle and Fitness magazine. In October 2011, Marsh entered the Natural Physique Association Bodybuilding Championships in Sheffield where she was placed 5th overall.

Marsh appeared on Daybreak and The Late Late Show in October 2011.

Marsh’s new physique resulted in photoshoots and interviews with various magazines. OK! magazine featured an “at home” interview on 11 October 2011. Heat magazine followed on 12 October 2011.

On 25 January 2012, Marsh appeared on Channel 5’s Bullied: My Secret Past. She spoke of the effect bullying had on her and how it has made her who she is today. She also met other victims of bullying.

In 2012, Marsh featured in two TV shows for the DMAX network. The first, “Jodie Marsh: Bodybuilder” chronicled Marsh’s attempts to compete with only weeks of training. The second show “Jodie Marsh: Brawn in the USA” featured Jodie winning gold in the INBF Bodybuilding Championships in Los Angeles in June 2012.

In April 2013, Channel 5 broadcast the first of two shows titled Jodie Marsh: Bullied. The show features Marsh venturing to the United States to investigate how American schools tackle bullying.