Significant Beneficial Owner notice: LLP requests specified ownership details and documents; non-compliance permits further action. Notice under Section 90 and the LLP SBO Rules asserts reasonable cause to believe the recipient is a Significant Beneficial Owner and that the prescribed declaration has not been made. The LLP requires, within thirty days, specified particulars and supporting documents: beneficial owner name and address, tax identification, registered holder, date and particulars of acquisition, documentary terms of beneficial ownership, reasons for not filing the prescribed LLP beneficial ownership declaration, and any other relevant information; a copy of the prescribed form is attached.