“33. The vast majority of Mr Goldberger's witness statement contains a recitation of facts based on the documents, commentary on those documents, argument, submissions and expressions of opinion, particularly on aspects of the commercial property market. In all those respects Mr Goldberger's witness statement is an abuse. The abusive parts should be struck out. … 39. Mr Goldberger would not be allowed at trial to give oral evidence which merely recites the relevant events, of which he does not have direct knowledge, by reference to documents he has read. Nor would he be permitted at trial to advance arguments and make submissions which might be expected of an advocate rather than a witness of fact. These points are made clear in paragraph 7 of Appendix 9 to the Chancery Guide (7th ed), which is as follows: ‘A witness statement should simply cover those issues, but only those issues, on which the party serving the statement wishes that witness to give evidence in chief. Thus it is not, for example, the function of a witness statement to provide a commentary on the documents in the trial bundle, nor to set out quotations from such documents, nor to engage in matters of argument. Witness statements should not deal with other matters merely because they may arise in the course of the trial.’ 40. Nor would Mr Goldberger be permitted to give expert opinion evidence at the trial. A witness of fact may sometimes be able to give opinion evidence as part of his or her account of admissible factual evidence in order to provide a full and coherent explanation and account. … Mr Goldberger, however, has expressed his opinions on market practice by way of commentary on facts of which he has no direct knowledge and of which he cannot give direct evidence. In that respect he is purporting to act exactly like an expert witness giving opinion evidence. Permission for such expert evidence has, however, been expressly refused.”