She was returning from having delivered her convicts to Port Jackson and Van Diemen's Land when she was damaged in October 1818 a gale at Madras.

Lady Castlereagh reached Madeira on 27 April and arrived at Diamond Harbour on 14 September.

[2] Homeward bound, she left St Helena on 10 September in company with the whalers Cornwall and Ocean.

Lady Castlereagh reached St Helena on 20 July and arrived at Diamond Harbour on 10 December.

Homeward bound, she was at Saugor on 23 January 1806, reached St Helena on 15 May, and arrived back at the Downs on 18 July.

Homeward bound, she was at Saugor on 16 January 1808, reached St Helena on 12 June, and arrived back at the Downs on 14 August.

She was at the Cape of Good Hope on 25 December, reached St Helena on 26 January 1813, and arrived at the Downs on 13 May.

Lady Castlereagh reached St Helena on 28 May and Batavia on 5 September, before arriving at Whampoa Anchorage on 2 November.

Homeward bound, she crossed the Second Bar on 22 January 1817, reached st Helena on 10 April, and arrived at the Downs on 6 June.

Lloyd's Register for 1818 showed her with Welton, master, Robinson, owner, and trade London–New South Wales.