Sheffield rules

Main article: Sheffield rules

By the late 1850s, many football clubs had been formed throughout the English-speaking world, to play various codes of football. Sheffield Football Club, founded in 1857 in the English city of Sheffield by Nathaniel Creswick and William Prest, was later recognised as the world's oldest club playing association football.^[75] However, the club initially played its own code of football: the Sheffield rules. The code was largely independent of the public school rules, the most significant difference being the lack of an offside rule.
The code was responsible for many innovations that later spread to association football. These included free kicks, corner kicks, handball, throw-ins and the crossbar.^[76] By the 1870s they became the dominant code in the north and midlands of England. At this time a series of rule changes by both the London and Sheffield FAs gradually eroded the differences between the two games until the adoption of a common code in 1877.