The head of the prison was termed the warden, who was appointed by letters patent. It became a frequent practice of the holder of the patent to farm out the prison to the highest bidder. This custom made the prison long notorious for the cruelties inflicted on prisoners. One purchaser of the office, Thomas Bambridge, who became warden in 1728, was of particularly evil repute. He was guilty of the greatest extortions upon prisoners, and, according to a committee of the House of Commons appointed to inquire into the state of English gaols, arbitrarily and unlawfully loaded with irons, put into dungeons, and destroyed prisoners for debt, treating them in the most barbarous and cruel manner, in high violation and contempt of the laws. He was committed to Newgate Prison, and an act was passed to prevent his enjoying the office of warden.