She made some voyages to England, including at least one, in 1809, under charter to the British East India Company (EIC).

In December 1801, Upton Castle sailed, together with Marquis Cornwallis, Betsey (an armed HEIC brig), some other vessels, and 1000 troops to Daman and Diu to persuade the Portuguese governor to resist any French incursion.

The expedition was under the command of Captain John Mackellar, of the Royal Navy, whose own vessel, Terpsichore, was not ready for sea.

In August 1804, Admiral Linois was cruising in the Indian Ocean in Marengo, together with the frigates Atalante and Sémillante.

On the 18th, near the des Neoufs Channel they encountered and captured two British merchant men, Charlotte and Upton Castle.

She was at the Cape of Good Hope on 15 September, reached Saint Helena on 7 October, and arrived at The Downs pm 22 December.

[2] The British then chartered some nine vessels, Upton Castle among them, as cartels to carry back to France the French troops that they had captured.

British ships were then free to sail to India or the Indian Ocean under a licence from the EIC.