Notification of Major Interest in Shares

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Hydrodec Group plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

Placing increasing share capital

X

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

Majedie Investments PLC

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

ROY Nominees Ltd

(A/c designation: 564000)

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

22 December 2009

6. Date on which issuer notified:

22 December 2009

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

Below 4%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible using the 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

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

Ord 

N/A

10,866.666

10,866,666

Below 4%

ISIN: GB00B02FJF09

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

N/A

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

10,866,666

Below 4%

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

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/A

13. Additional information:

14. Contact name:

15. Contact telephone number:

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 entities)

Majedie Investments PLC

Contact address (registered office for legal entities)

Beaufort House, 51 New North Road, Exeter EX4 4EP

Phone number

See below

Other useful information (at least legal representative for legal persons)

See below

B. Identity of the notifier, if applicable XVii

Full name

Chris Lewis

Contact address

Beaufort House, 51 New North Road, Exeter EX4 4EP

Phone number

01392 477589

Other useful information (e.g. functional relationship with the person or legal entity subject to the notification obligation)

For and on behalf of Capita Financial Group, Company Secretary

C. Additional Information