In the last month I have seen a rat three times in our garden, entering from the same spot near our neighbour's house. The neighbour has a pretty wild garden with lots of shrubbery, piles of wood, old garden accessories etc. We also live near fields and woodland so that might also explain them appearing, but I'm at a loss as to why now.
My issue is whether to contact the council as it's not a problem as such, I just don't like them and have always associated them with disease and general unpleasantness.