I suspect a good proportion of these owners are not walking to the station to go to work but receive generous hand outs from HMG.
I could be of course totally wrong. Always baffled me that people in that situation can afford doggie food.
Bring back the dog license. I know it was only 7/6 when abolished ( 37.5p for younger people ). To allow for costs of fouling and anoyance to neighbours etc should be about the same as car license.