rugby union system Yorkshire Shield Yorkshire Trophy Yorkshire Vase Discontinued competitions Yorkshire 4 - tier 11 league that was restructured into Yorkshire 4 (North West) and Yorkshire 4 (South East) in 2017 Yorkshire 5 - tier 11 league that was discontinued in 2017 Yorkshire 6 - tier 12 league that was discontinued in 2010 See also Northern Division English rugby union system References External links Yorkshire RFU website 1869 establishments in England Rugby union governing bodies in England ! Sports organizations established in 1869 Rugby union