RNS Number:9516D
Newport Networks Group PLC
17 September 2007



TR-1(i): notification of major interests in shares

+--------------------------------------------+--------------------------------+
|1. Identity of the issuer or the underlying |Newport Network Group PLC       |
|issuer of existing shares to which voting   |                                |
|rights are attached(ii):                    |                                |
+--------------------------------------------+----------------------+---------+
|2. Reason for the notification (please tick the appropriate box or |         |
|boxes)                                                             |         |
+-------------------------------------------------------------------+---------+
|An acquisition or disposal of voting rights                        |         |
+-------------------------------------------------------------------+---------+
|An acquisition or disposal of financial instruments which may      |         |
|result in the acquisition of shares already issued to which voting |         |
|rights are attached                                                |         |
+-------------------------------------------------------------------+---------+
|An event changing the breakdown of voting rights                   |         |
+-------------------------------------------------------------------+---------+
|Other (please specify):                                            |         |
+--------------------------------------------+----------------------+---------+
|3. Full name of person(s) subject to the    |Newton Investment Management    |
|notification obligation(iii):               |Limited                         |
+--------------------------------------------+--------------------------------+
|4. Full name of shareholder(s) (if different|Newton Investment Management    |
|from 3.)(iv):                               |Limited                         |
+--------------------------------------------+--------------------------------+
|5. Date of the transaction (and date on     |14/09/07                        |
|which the threshold is crossed or reached if|                                |
|different)(v):                              |                                |
+--------------------------------------------+--------------------------------+
|6. Date on which issuer notified:           |17/09/07                        |
+--------------------------------------------+--------------------------------+
|7. Threshold(s) that is/are crossed or      |Decrease from 8.23% to 7.96%    |
|reached:                                    |                                |
+--------------------------------------------+------------------------------+-+
|8. Notified details:                        |Sale of 1,000,000 shares      | |
+--------------------------------------------+----------------------+-------+-+
|A: Voting rights attached to shares                                              |
+------------+-------------------+------------------------------------------------+
|Class/type  |Situation previous |Resulting situation after the triggering        |
|of shares   |to the Triggering  |transaction(vii)                                |
|            |transaction (vi)   |                                                |
|if possible +----------+--------+------+--------------------+--------------------+
|using the   |Number of |Number  |Number|Number of voting    |% of voting rights  |
|ISIN CODE   |Shares    |of      |of    |rights ix           |                    |
|            |          |Voting  |shares|                    |                    |
|            |          |Rights  +------+---------+----------+---------+----------+
|            |          |viii    |Direct|Direct x |Indirect  |Direct   |Indirect  |
|            |          |        |      |         |xi        |         |          |
+------------+----------+--------+------+---------+----------+---------+----------+
|  Ordinary  |30,173,872|8.23%   |N/A   |N/A      |29,173,872|N/A      |7.96%     |
|   Shares   |          |        |      |         |          |         |          |
|            |          |        |      |         |          |         |          |
|ISIN        |          |        |      |         |          |         |          |
|GB00B00ST620|          |        |      |         |          |         |          |
|            |          |        |      |         |          |         |          |
|            |          |        |      |         |          |         |          |
+------------+----------+--------+------+---------+----------+---------+----------+

+------------------------------------------------------------------------------+
|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.         |           |
+---------------+-----------+------------------+-------------------+-----------+
|               |           |                  |                   |           |
+---------------+-----------+------------------+-------------------+-----------+
|Total (A+B)                                                                  |
+-------------------------------------+---------------------------------------+
|Number of voting rights              |% of voting rights                     |
+-------------------------------------+---------------------------------------+
|29,173,872                           |7.96%                                  |
+-------------------------------------+---------------------------------------+
|9. Chain of controlled undertakings through which the voting rights and/or   |
|the financial instruments are effectively held, if applicable xv:            |
+-----------------------------------------------------------------------------+
|Newton Investment Management Limited hold these shares as a discretionary    |
|Investment Manager.                                                          |
+-----------------------------------------------------------------------------+
|Proxy Voting:                                                                |
+------------------------------------------------+----------------------------+
|10. Name of the proxy holder:                   |N/A                         |
+------------------------------------------------+----------------------------+
|11. Number of voting rights proxy holder will   |N/A                         |
|cease to hold:                                  |                            |
+------------------------------------------------+----------------------------+
|12. Date on which proxy holder will cease to    |N/A                         |
|hold voting rights:                             |                            |
+------------------------------------------------+----------------------------+
|13. Additional information:     |                                            |
+--------------------------------+--------------------------------------------+
|14. Contact name:               |Sam Warden                                  |
+--------------------------------+--------------------------------------------+
|15. Contact telephone number:   |+44 (0)20 7163 2147                         |
+--------------------------------+--------------------------------------------+

Annex Notification Of Major Interests In Shares xvi
+-------------------------------------------------------------------------------+
|A: Identity of the person or legal entity subject to the notification          |
|obligation                                                                     |
+------------------------------------------+------------------------------------+
|Full name (including legal form for legal |Newton Investment Management Ltd    |
|entities)                                 |                                    |
+------------------------------------------+------------------------------------+
|Contact address (registered office for    |Mellon Financial Centre             |
|legal entities)                           |160 Queen Victoria Street           |
|                                          |London EC4V 4LA                     |
+------------------------------------------+------------------------------------+
|Phone number                              |+44 (0)207 163 9000                 |
+------------------------------------------+------------------------------------+
|Other useful information (at least legal  |Rachel Wheeler                      |
|representative for legal persons)         |                                    |
+------------------------------------------+------------------------------------+

+-------------------------------------------------------------------------------+
|B: Identity of the notifier, if applicable xvii                                |
+------------------------------------------+------------------------------------+
|Full name                                 |Newton Investment Management Ltd    |
+------------------------------------------+------------------------------------+
|Contact address                           |Mellon Financial Centre             |
|                                          |160 Queen Victoria Street           |
|                                          |London EC4V 4LA                     |
+------------------------------------------+------------------------------------+
|Phone number                              |+44 (0)207 163 9000                 |
+------------------------------------------+------------------------------------+
|Other useful information (e.g. functional |Discretionary Investment Manager    |
|relationship with the person or legal     |                                    |
|entity subject to the notification        |                                    |
|obligation)                               |                                    |
+------------------------------------------+------------------------------------+
|C: Additional information                                                     |
+------------------------------------------------------------------------------+



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