Srt Marine Sys. Regulatory News (SRT)

9 Mar 2007 14:31

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)

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

UBS Investment Bank

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

N/A

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

7 March 2007 (see 13 - additional information)

6. Date on which issuer notified:

8 March 2007

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

3%

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 3,170,934 3,170,934

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 Non-notifiable Non-notifiable Below 3%

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 Non-notifiable Below 3%

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

N/AProxy 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/A

13. Additional information:

This disclosure has been made to fulfil the FSA requirement:

The Transparency Directive states that where a major shareholder has not been required (because of an acquisition or disposal of voting rights or due to a change in the total voting rights in issue) to make an announcement to the issuer prior to 20 March 2007, then we must do so by that date in any event.

Please note that UBS are no longer required to include prime brokerage holdings in the disclosures under DTR5.

14. Contact name:

Angela Huff, Associate Director

15. Contact telephone number:+44 (0)20 7568 4981Software Radio Technology plc 01761 409 500Matthew Rogers Hanson Westhouse Limited 0113 246 2610Tim Feather / Matthew Johnson