I think it is about a man from Neasden who sells cabbages in Portobello Market on saturday mornings. Think about it, its obvious. "Never an honest word" clearly referrs to the evil manipulative techniques cabbage-hawkers use to dull the otherwise sharp minds of Northwest London housewives. "It was the wicked and wild wind Blew down the doors to let me in" referrs to his blowing the doors off the Vegetable Storage Facility at New Covent Garden wholesale market inorder to steal the cabbages, which enabled him to sell them so cheaply. Coroborrated by;. "Feel the fear in my enemy's eyes" as he revells in the despair in the other market traders' eyes as they realise they cannot compete with his bargain cabbage prices. "my head on a silver plate" is a clear reference to him loosing his market stall, as his huge glut of stolen cabbages start to rot, as the people of Notting Hill (the "revoloutionaries waiting") grow tired of eating cabbage, albeit at knowck-down prices. Mrs Peters (Saint Peter) makes a complaint (calls his name) to the Market Manager, a Jewish gentleman called Mr Jerusalem, who rings the bell, ie, calls time on this cavalier trading "cavalry singing", ie someone has "sung" or sneaked on him. "Now in the morning I sweep alone Sweep the streets I used to own". This implies the despair he fears after Mr Jerusalem, having closed his stall, takes pity on him, and gives him a job sweeping the market after it has shut down for the day, and all the honest traders have gone home. The fact that none if you had spotted the obvious meaning of this song is beyond me.