I may be about to crush an illusion. Wombles are not real. As a Wimbledon resident with a conscience, I’d like to believe in pioneering, furry environmentalists who toil away unnoticed, picking up “Things that the everyday folks leave behind”. But they don’t exist. Sadly, folks who leave things behind, do.  Wombats, on the other hand, are very real, as you well know. I’ve seen them, on my one trip to your beautiful island, and have spent some time trying to persuade British friends that my photo of a large round brown object is not, in fact, a bush but...