The odds of successfully challenging an arbitral award in the English Courts on the basis of s68 of the Arbitration Act 1996 (serious irregularity) remain low. In the recent past over 95% of s68 challenges have been unsuccessful and in the period from 2015 to 2017 only 3 out of 112 s68 appeals succeeded, approximately 2.7% of applications made.
However, the English High Court has recently set aside an arbitral award for serious irregularity under s68(2)(a) in the case of RJ and another v HB  EWHC 2833 (Comm). This case is a relatively rare and interesting example of a successful s68(2)(a) challenge.
In a recent decision, the Mercantile Court dismissed two appeals under s68 (procedural irregularity) and s69 (error of law) of the Arbitration Act 1996 (the "Act") which sought to challenge an arbitral tribunal's refusal to strike out a claim. The appeals were dismissed on the basis that the tribunal's orders did not constitute "awards" for the purposes of the Act. The fact that the parties had consented to the s69 appeals did not remove the need to establish that the court had jurisdiction under s69 of the Act: Enterprise Insurance Co Plc v (1) U-Drive Solutions (Gibraltar) Ltd (2) James Drake QC  EWHC 1301 (QB).