Originally built as MV Hudson Deep she was chartered by the Ministry of Defence (MoD) in 1980.

In April 1982, Brambleleaf was diverted from Armilla patrol duties in the Persian Gulf for service during the Falklands Conflict.

Due to damage sustained due to severe weather, Brambleleaf transferred her cargo to RFA Tidespring off South Georgia and returned to the UK for repairs during May prior to returning to the South Atlantic in June, and again in August.

[1] On 18 November 1983, Brambleleaf sailed along with the assault ship HMS Fearless to support Operation Offcut, providing naval support for British troops in the multi-national force in Lebanon.

[1] On 29 August 1984 Brambleleaf received her Falklands Islands 1982 Battle honour, presented by Mr A. Kemp, Director Ships and Fuel (DST (SF)).