Final meeting and dissolution require liquidator to prepare account, convene advertised meetings and submit returns to regulators. Section 509 requires the liquidator to prepare an account of winding up, convene and advertise meetings of members and creditors at least one month in advance, and within one week after the later meeting to send copies of the account to the Registrar and Official Liquidator and make returns; failures attract fines. If quorum is absent a return stating so suffices. The Registrar registers the account and returns, and the Official Liquidator's scrutiny may prompt a Tribunal report leading either to deemed dissolution or to further investigation and adjudication.