I actually never took any pictures of the narrow country roads that I had the pleasure (NOT!) of navigating whilst in the English countryside. But you are in luck. The Cornwall CAM that I check out once a day posted this photo, taken by Charles Winpenny, today:
You can see the tire tracks. One lane. And see those bushes? Well, in most of my experience in driving in Devon, those bushes hid a lovely stone wall that was perfect for removing your side mirror!