Proton Mtr Pwr Regulatory News (PPS)

For filings with the FSA include the annex

For filings with issuer exclude the annex 

TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Proton Power Systems Ord 5p

2. Reason for notification (yes/no)

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 notification obligation:

The Royal Bank of Scotland Group plc

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

ABN AMRO Bank N.V.

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

03/10/2008

6. Date on which issuer notified:

07/10/2008

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

3%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use ISIN code

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Number of shares

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

Ordinary GBP 5p Ord 

GB00B140Y115

2,500,000

2,500,000

0

0

0%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date 

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

Total (A+B)

Number of voting rights

Percentage of voting rights

0

0%

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

The Royal Bank of Scotland Group plc (0.0%)

RFS Holdings N.V. (0.0%)

ABN AMRO Holding N.V. (0.0%)

ABN AMRO Bank N.V. (0.0%)

Proxy Voting:

10. Name of 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:

This Notification is based upon the Voting Rights figure of 61,390,863 obtained from your Regulatory Announcement dated 22nd May 2008

14 Contact name:

Richard Hopkins

15. Contact telephone number:

020 7714 4459