Valaris plc is an offshore drilling contractor headquartered in London, United Kingdom. It is the largest offshore drilling and well drilling company in the world, and owns 74 rigs, including 50 offshore jackup rigs, 16 drillships, and 8 semi-submersible platform drilling rigs.
In 2019, the company's revenues were primarily from Total S.A. (16% of revenues), BP (9% of revenues), Saudi Aramco (7% of revenues), and Petrobras (4% of revenues).