PAO TATNEFT v UKRAINE
 Lloyd's Rep. Plus 1
QUEEN’S BENCH DIVISION (COMMERCIAL COURT)
Before Sir Andrew Smith, sitting as a Judge of the High Court
Arbitration – Enforcement of New York Convention award – Defence based on illegality of submission to arbitration – Whether respondent was estopped from relying upon the defence – Whether the respondent had waived the defence – Arbitration Act 1996, sections 73 and 103(2).