law: Arbitration Act 1940
  Section 22
  Language
  (1) The parties are free to agree upon the
  
  languages to be used in the arbitral proceedings.
  (2) Failing any agreement referred to in
  
  sub-section (1), the arbitral tribunal shall determine the language or
  
  languages to be used in the arbitral proceedings.
  (3) The agreement or determination, unless otherwise
  
  specified, shall apply to any written statement by a party, any hearing and any
  
  arbitral award, decision or other communication by the arbitral tribunal.
  (4) The arbitral tribunal may order that any
  
  documentary evidence shall be accompanied by a translation into the language or
  
  languages agreed upon by the parties or determined by the arbitral tribunal.