Exhibit 45 CONFORMED COPY - -------------------------------------------------------------------------------- ADDENDUM TO IRREVOCABLE UNDERTAKING (Ed Shea) To: Ohsea Holdings Limited Marine Court The Parade Cowes Isle of Wight PO31 7QJ ("Offeror") WestLB Panmure Woolgate Exchange 25 Basinghall Street London EC2V 5HA Nabarro Wells & Co. Limited Saddlers House Gutter Lane London EC2V 6HS Rossini plc Buckland House Waterside Drive Langley Business Park Slough Berkshire SL3 6EZ ("Target") Dated: 15 April, 2003 Scheme of arrangement in relation to the Target I refer to an irrevocable undertaking dated 7 April, 2003 given by me relating to the proposed scheme of arrangement relating to the Target under section 425 of the Companies Act 1985 (the Irrevocable Undertaking). I agree that, notwithstanding clause 9(A)(e) of the Irrevocable Undertaking: (a) my obligations under the Irrevocable Undertaking shall not lapse if the Scheme Document has not been posted to shareholders by 30 April, 2003; and (b) my obligations under the Irrevocable Undertaking shall instead lapse if the Scheme Document has not been posted to shareholders by 13 May, 2003. - -------------------------------------------------------------------------------- 2 - -------------------------------------------------------------------------------- This addendum is governed by and shall be construed in accordance with English law. IN WITNESS of which this addendum has been executed as a deed and has been delivered on the date which first appears on page 1. SIGNED as a deed ) /s/ Ed Shea ----------------------------------- by ED SHEA ) Name: Ed Shea In the presence of: Witness's Signature: Jackie Hodge Name: Jackie Hodge Address: 655 Brea Canyon Road, Walnut, CA 91789 - --------------------------------------------------------------------------------