Three and half weeks. Three hundred miles. I saw roaring arterial highway and silent lanes, candlelit cathedrals and angry men in bad pubs. The Britain of 1936 was a land of beef paste sandwiches and drill halls. Now we are nation of vaping and nail salons, pulled pork and salted caramel. In the autumn of 1936, some 200 men from the Tyneside town of Jarrow marched 300 miles to London in protest against the destruction of their towns and industries...