In addition to the raspy voice of a 40-a-day costermonger, he's got a streetwise energy to him.
From the dailymail.co.uk
Because it will make you fart like a costermonger.
From the guardian.co.uk
It was Martin himself who brought the first prosecution under the Act, when he had Bill Burns, a costermonger-a street seller of fruit-arrested for beating a donkey.
From the en.wikipedia.org
More examples
A hawker of fruit and vegetables from a barrow
Costermonger, or simply Coster, is a street seller of fruit (apples, etc.) and vegetables, in London and other British towns. They were ubiquitous in mid-Victorian England, and some are still found in markets. ...
A street peddler, usually selling fruits or vegetables. An estimated 12,000 costermongers vied for patrons on London streets in the 1850s.