SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of August, 2006 RYANAIR HOLDINGS PLC (Translation of registrant's name into English) c/o Ryanair Ltd Corporate Head Office Dublin Airport County Dublin Ireland (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. Form 20-F..X.. Form 40-F..... Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes ..... No ..X.. If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- ________ BLOCK LISTING SIX MONTHLY RETURN Information provided on this form must be typed or printed electronically. To: Listing Applications, Irish Stock Exchange The FSA Date: 10 August 2006 AVS No: Name of applicant: Ryanair Holdings plc Name of scheme: 1998 Share Option Scheme 2000 Share Option Scheme Period of return: From: 20 December 2006 To:10 August 2006 Balance under scheme from previous return: Nil. The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return: N/A Number of securities issued/allotted under scheme during period: 2,189,746 Ryanair Holdings plc Share Option Plan 1998 (472,448) Ryanair Holdings plc Share Option Plan 2000 (1,717,298) Balance under scheme not yet issued/allotted at end of period 4,020,692 Number and class of securities 6,210,438 23 December 2005 originally listed and the date of admission Ryanair Holdings plc Share Option Plan 1998 (1,795,492) Ryanair Holdings plc Share Option Plan 2000 (4,414,946) Total number of securities in issue at the end of the period 771,729,697 Name of contact: Jim Callaghan Address of contact: Ryanair Corporate Head Office, Dublin Airport, Co. Dublin Telephone number of contact: +35318121236 SIGNED BY ______________________________________________ Director/company secretary/suitably experienced employee/duly authorised officer, for and on behalf of _______________________________________________ Name of applicant If you knowingly or recklessly give false or misleading information you may be liable to prosecution. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. RYANAIR HOLDINGS PLC Date: 15 August, 2006 By:___/s/ James Callaghan____ James Callaghan Company Secretary & Finance Director