This article suggests that otters are now starting to become much more common in Britain. Otters have previously struggled to survive in Britain and have been restricted to isolated parts of the countryside. Although they were widespread in the 1950's they were nearly wiped out by the 1970's due to the use of pesticides which poisoned both the otters and the fish they depend on for food. It appears that improvements in the water quality of rivers and increasingly fish stocks now means that the creatures are becoming more common. Some otters have also started to adopt an urban lifestyle with reports of them being seen in gardens, parks and churchyards.