The social and economic changes had brought along new lines to be crossed over what was legal and illegal. Doors to new money-making businesses opened, along with new opportunities for crime. "Gambling, vice, clubs, white collar fraud, property development and Mafia-style money laundering were the key areas for London's modern-minded criminals in the 1960s. Drugs were added in the 1970s'' (Ross and Clark, 304). Many changes economically and socially have occurred between the 19th century in London and London in the 1960s and 70s. In 19th century London, and as seen in our research and reading of Dickens' Bleak House, crimes most often committed were petty thefts and violent crimes. Of course, there will be crime in every era of history, but new opportunities will present themselves. Ross and Clark explain in London, The Illustrated History the rise of businessman gangsters. Some gangs were more modern-minded and primarily used tact, while others “ran their empires with old-fashioned criminal values, using fear and physical violence" (Ross and Clark, 304). In our reading of Bleak House, we read of murder, particularly Mr. Tulkinghorn's murder, and the possible murder (though more plausibly a suicide) of Nemo. Theft was a very common occurrence in the streets, but now in the 60s and 70s we see a rise of more organized crime. The problem of crime exists both in the old ways and in new forms. 

“Gangland and Crime.” London: the Illustrated History, by Catherine Ross and John Clark, Penguin, 2011, pp. 304–305.