I've got to agree with Jenny & Debbie also, banning dogs from being allowed off the lead in public places will cause more harm than good. Stopping all their natural instincts to explore and sniff can't be healthy and i would expect it to cause more problems with the dogs tempremant, in the same way not socialising your dog can. I deliberatly walk my dog places where either the majority of dogs are off lead or in quiet places where I don't have to worry about keeping an eye out for dogs on leads. However he is good at following recall and stop commands so isn't a nuisance anyway. I generally follow the rule that if another dog is on the lead I will put mine on, but at any other time he's free to roam.