Bromley's most active command was of the post ship HMS "Champion" from 1803, in which he fought against the Flottille de Boulogne to help stop preparations for Napoleon's planned invasion of the United Kingdom before being sent to the North America Station. While escorting a convoy in 1806 he encountered the French ship of the line "Vétéran" and engaged it but failed to protect his convoy from the larger ship. He continued to serve in command of various frigates until 1808 when his father Sir George Pauncefote-Bromley, 2nd Baronet died and he inherited the baronetcy. At the end of the year he relinquished command of the frigate HMS "Statira" and never served at sea again. Bromley was promoted to admiral through seniority but spent his time on land as a deputy lieutenant of Nottinghamshire. He died in 1857 at the age of seventy-eight.