barrow boy

noun2

1. •
   (UK, old-fashioned) A boy or man who sells goods, especially fruits or vegetables, from a barrow; a costermonger.

   • I pointed out to him that it was impossible for him to do that ... barrow boys to take him back to Manchester. — 1939
2. •
   (slang, offensive) A financial industry worker from a working class or lower middle class family background.

   • The "barrow boy" commodities trader may well have no aspirations to old-style middle class tastes. — 1992