Hill remained in the mental health field, working in a number of asylums. He entered into partnership with Richard Sutton Harvey in 1840, and became proprietor of Eastgate House private asylum, Lincoln. On 29 October 1851 he was given a public dinner in Lincoln and presented with a testimonial as the "author and originator of the non-restraint system in lunacy"; the claim was disputed, In November 1852 he was chosen mayor of Lincoln, and he was elected a Fellow of the Society of Antiquaries of London on 17 February 1853. In the later 1850s he was at Wyke House Asylum, in partnership with Edmund Sparke Willett; the partnership was dissolved in 1860, with Willett remaining as proprietor. Hill became a licentiate of the College of Physicians, Edinburgh in 1859.