Holding(s) in Company

RNS Number : 5002V

Iomart Group PLC

29 May 2008

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):

22 May 2008

6. Date on which issuer notified:

28 May 2008

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

15%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares if possible using the ISIN CODE	Situation previous to the Triggering transaction (vi)
	Number of shares	Number of voting Rights (viii)
GB0004281639	13,941,644	13,941,644

Resulting situation after the triggering transaction (vii)

Class/type of shares if possible using the ISIN CODE	Number of shares	Number of voting rights (ix)		% of voting rights
	Direct	Direct (x)	Indirect (xi)	Direct	Indirect
GB0004281639	15,339,944		15,339,944		15.426%

B: Financial Instruments

Resulting situation after the triggering transaction (xii)

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

Total (A+B)

Number of voting rights	% of voting rights
15,339,944	15.426%

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

Fund Managing Co.	Number of shares held	Percentage of issued share capital	UK Registered Owner	Fund	Beneficial owner
Gartmore Fund Managers Limited	4,023,426	4.046%	HSBC GLOBAL CUSTODY NOMINEE UK LTD	56690	GARTMORE FUND MANAGERS LTD A/C GARTMORE UK & IRISH SMALL COMPANIES

	4,023,426	4.046%

Gartmore Investment Limited	5,520,006	5.551%	GOLDMAN SACHS NOMINEES LTD	63285	THE GARTMORE UK SMALL CAP BEST IDEAS FUND LIMITED
Gartmore Investment Limited	1,673,385	1.683%	GARTMORE SMALLER COMPANIES TRUST PLC	LST	GARTMORE SMALLER COMPANIES TRUST PLC
Gartmore Investment Limited	773,477	0.778%	GARTMORE GROWTH OPPORTUNITIES	56640	GARTMORE GROWTH OPPORTUNITIES PLC
Gartmore Investment Limited	3,349,650	3.369%	NORTRUST NOMINEES LIMITED	54550	STRATHCLYDE PENSION FUND

	11,316,518	11.380%

	15,339,944	15.426%