Clearing up my backlog.
In  EWCH 2208 (Comm) Zavod Ekran v Magneco the Blair J held in September 2017 that a company must not hide behind documents initiating arbitration being drafted in Russian, when a properly observant litigant should have known that arbitration proceedings were being commenced. The most important point from a practical perspective was found to be that the heading of a letter, in English, states that it comes from the Moscow arbitration body—the International Commercial Arbitration Court at the Chamber of Commerce and Industry of the Russian Federation. From that alone it should have been obvious that an arbitration was being commenced. There was no other reason for ICAC to be writing to the company.
An utterly practical approach.