Newgate Prison - London's most famous, or perhaps infamous, prison; commonly held those convicted of a violent crime, those awaiting execution or transportation. Over the years it became more than that, holding criminals of lesser crimes. It always seemed to be filled beyond capacity, hinting at either a society lost to lawlessness or a system of punishment that was too harsh. Prisoners with enough money could better their lot, receiving private rooms and even entertaining on a small scale.
For more details, see this post: Prison in Regency London