Harpenden will have to travel to Old Haberdashers .
Should they win and Chiswick draw or lose against Tabard , they will earn a play - off spot for the right to compete in London 1 North next season .
Harpenden will have to travel to Old Haberdashers and should they win and Chiswick draw or lose against Tabard , they will earn a play - off spot for the right to compete in London 1 North next season .