The Battle of Grand Gulf was fought on April 29, 1863, during th: In 2021, the UK produced 935 thousand barrels per day (bbl/d) of oil (and other liquids) and consumed 1,258 thousand bbl/d.[302] Production is now in decline and the UK has been a net importer of oil since 2005.[310] In 2020[update], the UK had around 2 billion barrels of proven crude oil reserves.[310]