A farmer fears the Greater Cambridge Partnership’s plans for the Cambourne to Cambridge off-road busway will ruin the site of his parents’ grave. John Sadler, 77, whose family have run a farm in Coton for four generations, explains that urns containing the ashes of father Frank and mother Eileen are buried in farmland on top of a hill that overlooks the village. The viewpoint is marked by a memorial bench and flowers and is passed by family members throughout the day because it is next to a footpath that connects his home with those of his two sons, Robert and Stuart. But the GCP plans to buil…