If a dog defecates an on designated land, the person in charge of the dog must remove the faeces. The maximum penalty at present is £1000, some local authorities may choose a lower penalty as they see fit.
Dog mess affects everyone. It is unpleasant to see it lying around on pavements and in parks, and it's even more unpleasant to step in. PARRS offer a range of Dog Waste Bins and Dog Fouling Signs to encourage dog owners to clean up and Keep Britain Tidy.