TO THE outside world, Leatherhead’s FA Cup run of 1974/75 might have looked like an ‘overnight success’. Indeed, the club had never previously reached the first round proper of the competition, much less the heights of the fourth round and the “Leicester game”. In our latest Guest Slot, Kevin Parrott recalls one of the mid-1970s great stories from non-league football. Leatherhead’s run wasn’t a case of ‘overnight success’ at all! Events and developments played their part in Leatherhead’s rise. In 1972-73, the Isthmian League expanded and Leatherhead moved over to the Isthmian from the Athenian League. The Athenian League was a good standard of football, but the Isthmian had some long-standing major amateur clubs of the South – such as Wycombe Wanderers, Sutton United, Hitchin…