Field had hoped to become an actor, but his impoverished circumstances led him to join the Metropolitan Police on its establishment in 1829. Entering as a sergeant with the E Division, he soon moved on to L Division and later the Woolwich Dockyards as an inspector. Around 1846 he joined the Detective Branch, and retired as its chief in 1852. Charles Dickens had a particular fascination in the development of the police force in London and would occasionally accompany police constables on their nightly rounds. Through this, Field and Dickens became good friends, and in 1851 Dickens wrote the short essay about Field and his work. Field was almost certainly the model for Inspector Bucket in Bleak House, and the parallel was drawn by contemporaries-so much so that Dickens wrote in to The Times to comment on the rumours, without actually denying them. There is also some suggestion that R. D. Blackmore may have based Inspector John Cutting, who appears the novelClara Vaughan, on Field. In addition to these fictionalized portrayals, Field was frequently lionized by the press. In 1850 Dickens wrote three articles for the journal Household Words in which he told stories of the adventures and exploits of the new detectives. With these articles he supplied character sketches of the detectives, with only the names changed. He gives us this description of Field:
Later life
After his retirement, Field was in the press again, appearing in a 2 February 1856 supplement of the IllustratedNews of the World, which was devoted to the trial of Dr Palmer of Rugeley, accused of poisoning three people. Although retired, the supplement described Field as "Inspector Field," implying that he was still active in the force. It also carried a memoir of his career. Field's actual involvement in the case was limited to a prior investigation of Palmer's financial activities, and he was not called to testify. Field's repeated use of his rank after his retirement, in his capacity as a private detective, caused consternation in official quarters, leading to at least two investigations of his conduct and a four-month stoppage of his pension in 1861. In 1865 Sir George Grey, the LiberalHome Secretary, dismissed the matter, as Field had finally retired from that line of work as well. Field himself, perhaps with a nod to his original calling, enjoyed using disguises, even when not necessary. Dickens thought that Field "boasted and play to the gallery" and otherwise puffed his own image which, as noted above, sometimes got him into trouble. Field is buried in Brompton Cemetery, London.