When it comes to the task of naming the world's top five biggest football clubs, it is nigh on impossible to leave Manchester United off the list.
Founded as Newton Heath LYR Football Club in 1878, before changing its name to Manchester United in 1902, the club has evolved from playing against railway companies to being one of the most recognisable brands in the world, highlighted by its current tally of 29.8million Twitter followers.
Throughout its 144-year history (120 since becoming United), the club has developed and enjoyed moments of success unlike any other English club. From the days of the Busby Babes to the trophy-laden era of Sir Alex Ferguson, United have sewn themselves into the fabric of English football.