It's game over for Jeremy Clarkson as the BBC finally confirmed today that the Top Gear presenter has been fired following an investigation into the now-infamous fracas with a producer while filming the popular show. But the decision to get rid of the controversial 54-year-old was not 'taken lightly' by BBC Director-General Lord Hall, but now speculation is swirling around the internet over who will be succeed Clarkson on Top Gear, which boasts an estimated 350 million viewers from around the world. Clarkson appeared in 183 episodes of the hit show, though the BBC pulled the remaining episodes of the current series before they could air, sparking outrage among fans of the show, which has led to protests, complaints and even a petition signed by over a million people. There are doubts over whether co-presenters James May and Richard Hammond will return to the show following Clarkson's departure, and as things stand, there no immediate plans for the show to return for a 23rd series, though the global success of the format will surely warrant a comeback. But providing they stay in the line up, who will join them in the iconic studio? We take a look at 6 potential candidates to become Clarkson's replacement.