Holding(s) in Company

Iomart Group PLC
19 April 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: (No)


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) : (Yes) Initial notification


3. Full name of person(s) subject to the notification obligation (iii):

Angus MacSween


4. Full name of shareholder(s) (if different from 3.) (iv):

                               Percentage
                               of issued
UK Registered   Number of        share
Owner           Shares held     capital    Beneficial owners

NY Nominees      18,735,652       18.843%  Angus MacSween and Marilyn MacSween
PH Nominees         550,652        0.554%  Angus MacSween
                   ----------  -----------
                 19,286,304       19.396%
                   ==========  ===========


5. Date of the transaction (and date on which the threshold is crossed or
reached if different) (v):

20 March 2007


6. Date on which issuer notified:

20 March 2007


7. Threshold(s) that is/are crossed or reached:

19%


8. Notified details:


A: Voting rights attached to shares

Class/type of shares if possible using    Situation previous to the Triggering
the ISIN CODE                                       transaction (vi)
                                        Number of      Number of voting Rights
                                        shares         (viii)

GB0004281639                              19,286,304                19,286,304




Resulting situation after the triggering transaction (vii)

Class/type of shares if      Number of     Number of voting     % of voting
possible using the ISIN CODE shares        rights (ix)          rights

                             Direct        Direct Indirect (xi) Direct Indirect
                                           (x)

GB0004281639                  19,286,304           19,286,304           19.396%


B: Financial Instruments

Resulting situation after the triggering transaction (xii)

Type of     Expiration Exercise/       Number of voting rights that may  % of
financial   Date       Conversion      be acquired if the instrument is  voting
instrument  (xiii)     Period/ Date    exercised/ converted.             rights
                       (xiv)







Total (A+B)
Number of voting rights                      % of voting rights
19,286,304                                   19.396%


9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable (xv):



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:


14. Contact name:

Angus MacSween


15. Contact telephone number:

0141 931 6400



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