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21 April 2004

PLASMON PLC OFFER FOR RAIDTEC HOLDINGS LIMITED UPDATE

On 16 April 2004, Plasmon announced a recommended offer to acquire Raidtec Holdings Limited ("Raidtec"), together with certain shareholder loans made to Raidtec.

The board of Plasmon is pleased to announce that by 2.00 p.m. on 20 April 2004, valid acceptances in respect of 5,195,614 Raidtec shares, representing 85.58 per cent. of the entire issued share capital of Raidtec, had been received by Plasmon in relation to its £3.4m acquisition of Raidtec. The board of Plasmon announces that the offer has been declared unconditional in all respects except for admission. It is expected that admission for 1,479,832 shares in relation to the offer and purchase of the shareholder loans will occur today.

Plasmon is applying the provisions of Section 204 of the Companies Act, 1963 of Ireland, to acquire compulsorily the remaining shares in Raidtec that have not been the subject of valid acceptances of the offer.

About Plasmon

Plasmon is the world leader in professional archival solutions, providing a comprehensive line of optical libraries, drives and media. Customers include corporations, institutions and government agencies worldwide and are backed by a global service and support network. Founded in 1985, Plasmon is listed on the London Stock Exchange, (LSE: PLM), and had fiscal year 2003 sales revenues of £60m. Worldwide headquarters are in Cambridge, England with US Sales and Manufacturing based in Colorado. Plasmon has regional sales offices throughout Europe and North America. For more information, visit www.plasmon.com or www.plasmon.co.uk.

Plasmon and UDO are registered trademarks of Plasmon Plc. Copyright 2003

These written materials are not for distribution in the United States, Canada, Australia, Japan or the Republic of Ireland. The information contained herein does not constitute an offer of securities for sale in the United States, Canada, Australia, Japan or the Republic of Ireland. Securities may not be offered or sold in the United States absent registration under the US Securities Act or an exemption therefrom. Plasmon has not and does not intend to register any of its securities under US securities law.