Srt Marine Sys. Regulatory News (SRT)

21 Mar 2007 15:34

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):

Software Radio Technology 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) Notification for FSA 20 March 2007 deadline

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):

GARTMORE FUND MANAGERS LTD A/C GARTMORE UK & IRISH SMALLER COMPANIES 5.179%;

THE ALPHA GEN VOLANTIS FUND LIMITED 4.050%;

STRATHCLYDE PENSION FUND 3.059%

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

N/A

6. Date on which issuer notified:

19 March 2007

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

15%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares Situation of previous to the Triggering transaction (vi) if possible using ISIN code Number of shares Number of voting Rights (viii) GB00B0M8KM36 15%

Resulting situation after the triggering transaction (vii)

Class/type of Number of Number of voting rights % of voting rights shares if possible shares (ix) using the ISIN CODE Direct Direct (x) Indirect Direct Indirect (xi) GB00B0M8KM36 12,047,604 12,047,604 15.389%

B: Financial Instruments

Resulting situation after the triggering transaction (xii)

Type of Expiration Exercise/ Number of voting % of voting financial Date (xiii) Conversion Period/ rights that may be rights instrument Date (xiv) acquired if the instrument is exercised/ converted. N/A N/A N/A N/A N/A Total (A + B) Number of Voting Rights % of voting rights 12,047,604 15.389%

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:N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights:

N/A13. Additional information:14. Contact name:Alison Averono

15. Contact telephone number:

+44 (0)20 7782 2324

Software Radio Technology plc 01761 409 500

Matthew Rogers Hanson Westhouse Limited 0113 246 2610

Tim Feather / Matthew Johnson