RNS Number:4662G
eircom Group plc
19 July 2006


Letter to     Eircom Group Plc
Letter dated  19 July 2006


Eircom Group plc ("The Company")

This notification relates to the ordinary shares of the Company ("the shares") 
and is given in fulfilment of the obligations imposed under section 198 of the 
Companies Act 1985 ("the Act").

We hereby notify you that on 14 July 2006, following acquisitions, the Credit
Suisse ("CS") companies listed below (together the "CS companies") held the
following interests in the issued share capital of the Company:

    1. Credit Suisse Securities (Europe) Limited ("CSSEL") 85,581,882 shares.
       CSSEL held an interest in 746,228 of these shares under section 208(5)  
       of the act by virtue of the right to redelivery of equivalent securities 
       under stock lending arrangements.

    2. Credit Suisse International ("CSI"): 470,650 shares.

The CS companies now hold a total interest of 86,052,532 shares being equivalent 
to approximately 8.02% of the issued share capital of the Company.

Those Credit Suisse companies which are direct or indirect holding companies of
CSSEL and CSI are, under the terms of section 203 of the Act, each interested by
attribution in any shares in which CSSEL and CSI are interested.


Letter from   Credit Suisse Securities (Europe) Limited



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