There has been a 53% rise in recorded rape in London over the last four years.
In the financial year 2008-2009, there were 2,177 reports of rape to the Metropolitan Police.
But by 2011-2012, that had jumped to 3,334 cases. There were 667 prosecutions, 369 of which were successful.
A Metropolitan Police spokesman claimed the rise was due to victims feeling more confident about coming forward.
He said: "We believe this rise in recorded crimes is partly due to an increase in victims coming forwards to report rape and sexual assaults."
Yvonne Traynor, chief executive of Rape Crisis South of London, said: "Women feel more confident they are going to be believed.
"There are more support services around and more a culture of doing everything we possibly can to get the bad guys off the streets."
The statistics are from the Crown Prosecution Service.