[1] For fifty years Harrison governed the hospital and managed its estates, despotically and without salary.
With Sir Astley Cooper he, in 1825, established Guy's as a complete medical school separate from St. Thomas's Hospital, with which it had always previously been allied.
[1] Harrison resented an inquiry into the hospital administration which was made by charity commissioners in 1837, but no abuses were discovered.
He was selected as one of the three appeal commissioners for the city of London on the first imposition of an income tax.
[1] Harrison married in 1797 Mary, daughter of H. H. Le Pelly of Upton and Aveley, Essex.