"17. Failure adequately to comply with an order for extended disclosure 17.1 Where there has been or may have been a failure adequately to comply with an order for extended disclosure, the court may make such orders as may be appropriate, including an order requiring a party to: (1) serve a further or revised disclosure certificate; (2) undertake further steps, including further or more extended searches to ensure compliance with an order for extended disclosure; (3) provide a further or improved extended disclosure list of documents; (4) produce documents; or (5) make a witness statement explaining any matter relating to disclosure. 17.2 The party applying for an order under paragraph 17.1 must satisfy the court that making an order is reasonable and proportionate (as defined in paragraph 6.4). 17.3 An application for any order under paragraph 17.1 should normally be supported by a witness statement. 18. Varying an order for extended disclosure: making an additional order for disclosure of specific documents 18.1 The court may at any stage make an order that varies an order for extended disclosure. This includes making an additional order for disclosure of specific documents or narrow classes of documents relating to a particular issue for disclosure. 18.2 The party applying for an order under paragraph 18.1 must satisfy the court that varying the original order for extended disclosure is necessary for the just disposal of the proceedings and is reasonable and proportionate (as defined in paragraph 6.4). 18.3 An application for an order under paragraph 18.1 must be supported by a witness statement explaining the circumstances under which the original order for extended disclosure was made and why it is considered that order should be varied. 18.4 The court's powers under this paragraph include, but are not limited to, making an order for disclosure in the form of models A to E, and requiring a party to make a witness statement explaining any matter relating to disclosure." 23. Robin Vos (sitting as a Deputy Judge to the High Court) recently summarised the approach of the Court in relation to applications under paragraph 17.1 ofPD 51U in Berkley Square[2021] EWHC 849 (C) , at [61] to [67] to which I have had regard. In particular, he stated: (i) that some basis must be shown for going "behind the process which has already been carried out and the certification of that process ", but; (ii) " what is required from the parties and the court is a pragmatic and flexible approach taking into account all the … all the circumstances."
"Copies of all communications and attendance notes of any kind from and to anyone at Mazars Accountants and AlixPartners."
"Copies of all communications, attendance notes of any kind from and to anyone at PWC (the Claimant's accountant), Deloitte (the investor's accountants who carried out the due diligence), On And On Consultants (OC&C who carried out investigation and due diligence for the investors)."