Holding(s) in Company

RNS Number:4731M
Newport Networks Group PLC
24 January 2008

TR-l: 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):

Newport Networks Group PLC ordinary shares of 0.1 pence each

2. Reason for the notification: (please state Yes/No):

Acquisition of voting rights

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

Barclays Global Investors

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

n/a

5. Date of the transaction and date on which the threshold is crossed or reached:

18 January 2008

6. Date on which issuer notified:

21 January 2008

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

6% to below reportable threshold

8. Notified details:

A: Voting rights attached to shares

Class /type Situation Previous to Resulting situation after the Triggering Transaction vii
of shares the Triggering
Transaction
If possible Number of Number of Number of Number of voting % of voting Rights
using the Shares voting Shares Rights iv
ISIN CODE Rightsviii
Direct x Indirect Direct Indirect
xi

GB00B00ST620 22,290,168 22,290,168 Not Not Not Not Not
reportable reportable reportable reportable reportable
Ord 0.1p
B00ST62

B: Financial Instruments

Resulting situation after the triggering transactionxii

Type of Expiration Exercise Number of voting % of voting
financial Datexiii Conversion Rights that may be Rights
instrument Period Acquired if the
/ Date xiv instrument is exercised/
converted.

n/a

Total (A+B)

Number of voting rights % of voting rights
Not reportable Not reportable

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

Barclays Global Investors Ltd

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:

Geoff Smith