Where can an amateur sports club receive pro bono legal help regarding being wrongly expelled from competition?

After 67 continuous years our Rugby Union club is being kicked out based on supposedly finishing last in a points criteria where clubs receive points for things like having a fence around a council allocated ground or having "properly" attired touch judges.We can prove we did not finish last and the whole system is fundamentally flawed and can never be truly balanced for all clubs.However it is looking increasingly like we will need legal advice or representation to resolve the issue.Being a non profit amateur club we cannot afford much at all but feel we have been harshly treated and would like justice to prevail.