31.   Except by order or leave of the court or where all parties agree, no expert evidence may be adduced at the trial or hearing.

32.   Save that the court would obviously not countenance terms which are nonsensical, the court is not concerned with the terms on which the parties have agreed.

33.   Of course, the parties might agree to disclose expert reports, a practice which is encouraged by the Court of Appeal.

34.   The ISVA form provides for the review procedure to be by way of arbitration, unless the parties have already agreed on an expert.

35.   Under these rules, parties can agree to refer technical questions to one or more experts and seek a determination on an issue.

36.   If the parties cannot agree on the price according to the formula, the matter is referred to an expert in the market.

37.   If the parties do not agree on the reference, they will still be able to pursue the matter through arbitration or litigation.

38.   If the parties agree on a procedure and the expert does not, the parties should appoint another expert.

39.   The expert is not precluded from taking this role unless the parties agree to prohibit him from doing so.

40.   The parties could agree to prevent the expert from carrying out his own independent investigations, either in the expert clause or at the start of a reference.