Comptroller-General of Convicts and Director of Prisons
When Western Australia became a penal colony in 1850, Henderson was appointed the colony's first Comptroller-General of Convicts. He travelled to Western Australia with the first convicts on board the Scindian, arriving on 1 June 1850. He found the colony completely unprepared for the convicts, lacking even a jail large enough to house them. Henderson secured lodging for the convicts at a ware house owned by Captain Scott, the harbour master. Henderson then began construction of a place for the warders to stay and in time the Convict Establishment, later known as Fremantle Prison. He was "a kindly and just man, moderate and understanding, opposed to the harsher forms of discipline. He thought that flogging as a punishment did more harm than good, and might be abolished except in rare cases, and that putting men in chains was useless and aggravating."1 Henderson married Mary Murphy in 1848. Following her death in 1855, he visited England with his son the following year and in 1857 married Maria Hindle. Henderson returned to Australia in 1858. He finally resigned as Comptroller-General of Convicts and left the colony in January 1863. On his return to Britain, he was appointed Chairman of Directors and Surveyor-General of Prisons and Inspector-General of Military Prisons on 29 July 1863, succeeding Sir Joshua Jebb. He sold his army commission in 1864 and was made a Companion of the Bath in 1868.
In 1869, Henderson was appointed to succeed Sir Richard Mayne as second sole Commissioner of Police of the Metropolis. He was an ideal compromise candidate between those who wanted a military man as Commissioner and those who thought the job should go to a civilian. Although a former army officer, Henderson had served in civilian appointments for the last eighteen years. He was also unknown to the British public, allowing him to establish a reputation only on his achievements as Commissioner. Henderson immediately endeared himself to his men by abolishing or relaxing some of the petty regulations imposed by Mayne and his first colleague, Sir Charles Rowan. For the first time, for instance, officers were permitted to grow facial hair. They were also allowed to vote for the first time, having initially been prevented by regulations forbidding them to take part in political activity. Henderson clashed with ReceiverMaurice Drummond over an increase in pay for his men, a rivalry which was to continue for the rest of his tenure. In order to spread his constables more widely and make them more available, Henderson established the fixed point system. He increased the Detective Branch to over 200 men and started the Habitual Criminals Register. He grouped the Divisions into Districts and introduced Schoolmaster Sergeants in each division to increase the literacy of his constables. However, Henderson faced problems. The authorities decided, against his advice, to reduce pensions and this, coupled with low wages, led to the first police strike in 1872. The Commissioner dealt with the situation efficiently, dismissing the ringleaders and then allowing most of them to rejoin the force. Although the reputation of the Met was harmed by this incident, Henderson himself was not criticised by the press. He faced an even more serious situation in 1877, when four senior officers of the Detective Branch were put on trial for corruption, but survived it with his reputation intact. In 1878, he was made a Knight Commander of the Bath. But, by this stage, Henderson was starting to lose his control of the force. He ignored the fact that the District Superintendents were becoming ineffective and that two of the four posts had fallen vacant. When the Fenian bombing campaign opened in 1883, he left its handling largely to his assistants, particularly Howard Vincent, James Monro and Robert Anderson. On 8 February 1886, the mishandling of the Trafalgar Square Riot exposed his inefficiency, and he immediately resigned.
