Lady Warren was a French prize that a Briton purchased c. 1804 and that served as a hired armed ship on a contract to the Royal Navy from 7 May 1804 into mid-1807.

[8] In January 1805 Lady Warren detained the American brig Commerce, Taylor, master, which was sailing from Havana to Rotterdam, and sent her into Penzance.

[10] Later the same month Lady Warren detained and sent into Plymouth the Jong Pieter, from Amsterdam to Corunna, and the Jeune Marie, Simmons, master, from Bordeaux to Elsinor.

[12] In July Lady Warren detained and sent into Plymouth the Hannah Margaretta, Schole, master, which had been sailing from Barcelona to Embden.

[15] Later in August Lady Warren detained and sent into Plymouth the Neptunus, Evans , master, which had been sailing from Bayonne to Tonningen.

[16] In September, Lady Warren detained and sent into Plymouth the Jussrow Elizabeth, Schomacher, master, which had been sailing from Ribadeo to Tonningen.

[19] On 26 November Lady Warren sailed from Plymouth to Torbay with Growler, six gun-vessels and yard- lighters, and other craft, to save the stores, guns, etc.