Believe it or not but Sweeny Todd is a fictional character. Shock - Horror!
I know that a lot of you believed that he was a real person, and to be honest there is some evidence to suggest otherwise.
However, he was created back in the Victorian times and was first heard of in the "Penny Dreadful" - "String Of Pearls"
The plot of the story was that Sweeny Todd would pull a lever on his barber chair tipping the customer down through a trap door and into the cellar below, breaking his neck on impact.
Sweeny would then go down and to ensure the customer was dead would slit his throat with a cut throat razor.
To dispose of the bodies, he had as an accomplice a Mrs Lovett, who ran the local Pie Shop.
Here she would dismember the body and use the body parts to fill her pies!
Apparently some of the best pies in London!
Bringing things up to date some what - In Cockney Rhyming Slang - "Sweeny Todd" is used as slang for the Metropolitan Police Department called the "Flying Squad"
Hence the 1970's successful TV Police drama The Sweeny!