Dartmoor, the South Downs, Cannock Chase.
Open access land is where off-lead walking is most straightforward — wide open ground, few pinch-points, natural recall opportunities. The caveat is livestock: moorland often has sheep or cattle, and dogs must go back on lead near them. Dartmoor carries a high year-round livestock density; the South Downs is more varied, with grazed and ungrazed sections separated by clear boundaries. Luups maps livestock zones and identifies the sections of moorland where off-lead walking is safe and legal — routing around the grazed areas rather than through them.