## **Exhibit31.1**

# ** **

**Certification Pursuant to Rule 13a-14 of The Securities Exchange Act of1934as Adopted Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002**

 

I, Mason P. Slaine,President and Chief Executive Officer of Information Holdings Inc. (the “Registrant”),certify that:

 

1.                                       I have reviewed this quarterly report on Form10-Q for the period ended September 30, 2004 of the Registrant;

 

2.                                       Based on my knowledge,this report does not contain any untrue statement of a material fact or omit tostate a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading withrespect to the period covered by this report;

 

3.                                       Based on my knowledge,the financial statements, and other financial information included in thisreport, fairly present in all material respects the financial condition,results of operations and cash flows of the Registrant as of, and for, theperiods presented in this report;

 

4.                                       The Registrant’s other certifying officer andI are responsible for establishing and maintaining disclosure controls andprocedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for theRegistrant and we have:

 

a)                                      designed suchdisclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the Registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this report is being prepared;

b)                                     evaluated the effectiveness of the Registrant’sdisclosure controls and procedures and presented in this report our conclusionsabout the effectiveness of the disclosure controls and procedures, as of theend of the period covered by this report based on such evaluation; and

c)                                      disclosed in this report any change in theRegistrant’s internal control over financial reporting that occurred during theRegistrant’s most recent fiscal quarter that has materially affected, or isreasonably likely to materially affect, the Registrant’s internal control overfinancial reporting; and

 

5.                                       The Registrant’s othercertifying officer and I have disclosed, based on our most recent evaluation ofinternal control over financial reporting, to the Registrant’s auditors and theaudit committee of the Registrant’s board of directors (or persons performingthe equivalent function):

 

a)                                      all significant deficiencies and materialweaknesses in the design or operation of internal control over financialreporting which are reasonably likely to adversely affect the Registrant’sability to record, process, summarize and report financial information; and

b)                                     any fraud, whether or not material, thatinvolves management or other employees who have a significant role in theRegistrant’s internal control over financial reporting.

 
| Date: November 3, 2004 | /s/ Mason P. Slaine                    |   |
|------------------------|----------------------------------------|--------|
|                   | Mason P. Slaine                        |
|                   | President and Chief  Executive Officer |

 

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