263.This section confers a power on the Authority to make rules endorsing the City Code on Takeovers and Mergers (“the Takeover Code”) and the Substantial Acquisition Rules (“SARs”), or particular provisions of them.
264.This section provides a mechanism enabling the Authority to exercise its disciplinary powers over authorised persons for a breach of the endorsed provisions of the Takeover Code or SARs.  The arrangements are designed to ensure that an adviser will cease to act where the Takeover Code or SARs have been breached.  Subsections (3) and (4) have the effect that disciplinary or intervention powers in respect of endorsed provisions may be taken by the Authority if the Takeover Panel has requested it to do so.
265.Before making rules which endorse the Takeover Code or the SARs, the Authority must follow the usual procedures set out in section 155 for consulting on a draft of the proposed rules.  By applying relevant provisions of section 155, subsection (8) of this section also requires the Authority to consult if it wishes to give a notification to the Takeover Panel that it considers the Panel's own consultation procedures are satisfactory.  If the Authority does give such a notification, the effect under subsections (6) and (7) is that the Authority's endorsement of the Code or SARs extends automatically to subsequent amendments of the Code or SARs.
Commentary on Sections Part X: Rules and Guidance Chapter I: Rule-Making Powers Section 143: Endorsement of codes etc