She sailed to England on a voyage for the British East India Company (EIC) and her owner sold her there.

[5] Sir William Pulteney sailed from St Helena on 9 July, in company with Union and the EIC "extra" ship Eliza Ann.

At daylight on 22 August, the Indiamen sighted a French privateer brig that sailed towards them and engaged Union, which was the leading ship.

The engagement lasted about 20 minutes and the French vessel surrendered at 48°5′N 13°0′W / 48.083°N 13.000°W / 48.083; -13.000 after Eliza Ann and Sir William Pulteney came up.

She had a crew of 73 men (of whom five were away on prizes), under the command of Lieutenant Pierre Henri Nicholas Benamy of the French Navy.

She also had on board five men from a prize crew that HMS Wasp had put on a Spanish vessel that Venus had recaptured.

[5] Sir William Pulteney, Eliza Ann, and Union arrived at The Downs on 2 September.

Captain Henry Christopher was appointed to command Sir William Pulteney on 24 April 1805,[14] and sailed her from Cork on 31 August.

[5] After the Dutch Governor Jansens signed a capitulation on 18 January 1806, and the British established control of the Cape Colony, HMS Belliqueux escorted the East Indiamen William Pitt, Jane, Duchess of Gordon, and Comet to Madras.

The convoy included Sir William Pulteney, Northampton, Streatham, Europe, Union, Glory, and Sarah Christiana.

Homeward bound, she was at the Cape on 18 September, reached St Helena on 19 October, and arrived at The Downs on 11 December.

[5] Barnard billed the EIC on 17 February 1809 for £771 11s 5d for repairs to Sir William Pulteney, and stores.

Sir William Pulteney was at Madeira on 1 June, and left a week later, reached Madras on 26 September, and arrived at Calcutta on 8 November.

Homeward bound, she was at Saugor on 9 January 1812, reached St Helena on 12 May, and arrived at The Downs on 22 July.

Sir William Pulteney was at Tenerife on 12 April, and reached St Helena on 21 June.