This does not look like trout country. The south London rush-hour traffic is fierce, and my quest to find a brown trout within the city seems futile.
Crawling through the urban sprawl, I reach Merton High Street, where a ribbon of water flows alongside the pavement in front of Sainsbury’s. It is what a trout stream is supposed to look like – clear, fast-paced, with waving beds of weed. And just the odd plastic bag and discarded wine bottle.
