He is by Maria's side as she gives birth to her stillborn baby in April 2008.Marcus quits his sonographer job to try to find more fulfilling employment.
Marcus later tells Sean that he is fed up of his jealousy and calls a cab to take him to London.
Sean pleads with Marcus but he says an emotional goodbye to Eileen, Maria and Liam (Rob James-Collier) before leaving for London, leaving Sean devastated.
In October 2016, Camping World went public on the New York Stock Exchange (NYSE: CWH) at US a share, giving the company a market value of approximately US billion.
As of May 1, 2017, Camping World was trading above US.
Lemonis was exposed to the automotive industry throughout his upbringing, his grandfather owning two of the largest Chevrolet dealerships in the United States and Lee Iacocca serving as a family friend and later mentor to Marcus.
Lemonis earned a bachelor's degree in political science and a minor in criminology from Marquette University in Milwaukee in 1995, and unsuccessfully ran as a Democrat for a seat in the Florida House of Representatives shortly after his graduation, As the CEO of Camping World, Lemonis teamed up with NASCAR for the first time in 2004, when the company sponsored driver John Andretti.
He and Sean plan to move into their own flat but Sean briefly loses his job at Underworld putting their plans on hold.
On 27 August 2008, Eileen Grimshaw (Sue Cleaver) receives a call from her son Todd (Bruno Langley) saying that he has seen Marcus in a nightclub in London with another man.
Marcus Anthony Lemonis (born November 16, 1973) is a Lebanese-born American businessman, investor, television personality, philanthropist and politician.
He is currently the chairman and CEO of Camping World, Good Sam Enterprises, Gander Outdoors and The in addition to being the star of The Profit, a CNBC reality show about saving small businesses.
In April 2017, Camping World announced the acquisition of the assets of Gander Mountain, a camping, fishing and hunting gear retailer, including Gander Mountain intellectual property and trademarks, Gander and boating and watersports lifestyle retailer Overton's.