law: Arbitration Act 1940
  Section 13
  Challenge Procedure.
  (1) Subject to sub-section (4), the parties are
  
  free to agree on a procedure for challenging an arbitrator.
  (2) Failing any agreement referred to in
  
  sub-section (1), a party who intends to challenge an arbitrator shall, within
  
  fifteen days after becoming aware of the constitution of the arbitral tribunal
  
  or after becoming aware of any circumstances referred to in sub-section (3) of
  
  section 12, send a written statement of the reasons for the challenge to the
  
  arbitral tribunal.
  (3) Unless the arbitrator challenged under
  
  sub-section (2) withdraws from his office or the other party agrees to the
  
  challenge, the arbitral tribunal shall decide on the challenge.
  (4) If a challenge under any procedure agreed
  
  upon by the parties or under the procedure under sub-section (2) is not
  
  successful, the arbitral tribunal shall continue the arbitral proceedings and
  
  make an arbitral award.
  (5) Where an arbitral award is made under
  
  sub-section (4), the party challenging the arbitrator may make an application
  
  for setting aside such an arbitral award in accordance with section 34.
  (6) Where an arbitral award is set aside on an
  
  application made under sub-section (5), the Court may decide as to whether the
  
  arbitrator who is challenged is entitled to any fees.