The parties have engaged the supervisory jurisdiction of the English Court over an arbitration that is taking place before a distinguished international tribunal. Reliance Industries Limited and BG Exploration and Production India Limited are the claimants in the underlying arbitration ("the Claimants"). The Union of India ("the Government"), acting by its Joint Secretary (Exploration) Ministry of Petroleum and Natural Gas, is the respondent in the underlying arbitration.
So far as material, and put briefly, the arbitration concerns issues of cost recovery by the Claimants from the Government in relation to oil and gas exploration. The parties had entered into two Production Sharing Contracts ("PSCs"). The sums at issue are substantial. Following challenges to a Final Partial Award ("the FPA") dated 12 October 2016, which were heard by Popplewell J (as he then was), the arbitral tribunal ("the Tribunal") issued a further Final Partial Award dated l October 2018 ("the Further Award"). The parties now advance or seek to advance various challenges to that Further Award.