Holding(s) in Company

Iomart Group PLC 15 October 2007 TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached (ii): Iomart Group plc 2. Reason for the notification (please state Yes/No): An acquisition or disposal of voting rights: (Yes) An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: (No) An event changing the breakdown of voting rights: (No) Other (please specify) : (No) 3. Full name of person(s) subject to the notification obligation (iii): Gartmore Investment Limited 4. Full name of shareholder(s) (if different from 3.) (iv): See Section 9 5. Date of the transaction (and date on which the threshold is crossed or reached if different) (v): 10 October 2007 6. Date on which issuer notified: 11 October 2007 7. Threshold(s) that is/are crossed or reached: 14% 8. Notified details: A: Voting rights attached to shares Class/type of shares if possible Situation previous to the using the ISIN CODE Triggering transaction (vi) Number of Number of voting shares Rights (viii) GB0004281639 14,992,370 14,992,370 Resulting situation after the triggering transaction (vii) Class/type of shares Number of shares Number of voting rights % of voting rights if possible using (ix) the ISIN CODE Direct Direct (x) Indirect (xi) Direct Indirect GB0004281639 14,035,184 14,035,184 14.114% B: Financial Instruments Resulting situation after the triggering transaction (xii) Type of Expiration Date Exercise/Conversion Number of voting % of voting financial (xiii) Period/ Date (xiv) rights that may be rights instrument acquired if the instrument is exercised/ converted. Total (A+B) Number of voting % of voting rights rights 14,035,184 14.114% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable (xv): Fund Number of Percentage UK Registered Fund Beneficial Managing shares held of issued Owner owner Co. share capital Gartmore 2,880,908 2.897% HSBC GLOBAL 56690 GARTMORE FUND Fund CUSTODY MANAGERS LTD A/ Managers NOMINEE UK C GARTMORE UK & Limited LTD IRISH SMALL COMPANIES 2,880,908 2.897% Gartmore 4,013,540 4.036% GOLDMAN SACHS 63285 THE GARTMORE UK Investment NOMINEES LTD SMALL CAP BEST Limited IDEAS FUND LIMITED Gartmore 1,273,385 1.281% BNY GIL CLT A LST GARTMORE Investment /C NOMS LTD A SMALLER Limited /C LST COMPANIES TRUST PLC Gartmore 673,477 0.677% BNY GIL CLT A 56640 GARTMORE GROWTH Investment /C NOMS LTD A OPPORTUNITIES Limited /C NWSC PLC Gartmore 3,000,000 3.017% VIDACOS VOLANT THE ALPHAGEN Investment NOMINEES LTD VOLANTIS FUND Limited A/C 2303 LIMITED Gartmore 2,193,874 2.206% NORTRUST 54550 STRATHCLYDE Investment NOMINEES PENSION FUND Limited LIMITED 11,154,276 11.217% 14,035,184 14.114% Proxy Voting: 10. Name of the proxy holder: - 11. Number of voting rights proxy holder will cease to hold: - 12. Date on which proxy holder will cease to hold voting rights: - 13. Additional information: All shares are held indirectly Email contact stewart@iomart.com 14. Contact name: Stewart Moir 15. Contact telephone number: 0141 931 6400 This information is provided by RNS The company news service from the London Stock Exchange

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Iomart Group (IOM)
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