AMER.L Regulatory News (AMER)

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:

AMERISUR RESOURCES PLC

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

YES

Other (please specify):______________

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

1. ASSET VALUE INVESTORS LTD

4. Full name of shareholder(s) (Registered Holders)

1. StateStreet Nominees - 01RP & ASV0

2. BBH Nominees - 132-2-0000-1

3. Mellon Nominees - COLF1283002

4. Chase Nominees - 11429 & 32072

5. BNY Nominees- 392213

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

13th July 2012

6. Date on which issuer notified:

17th July 2012

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

5%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

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

GB00B12MHD28 49,763,198 47,791,266 45,872,633 43,900,701 4.79%

Ordinary Shares

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

N / A

Total (A+B)

Number of voting rights

Percentage of voting rights

43,900,701

4.79%

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 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:

Asset Value Investors acts as discretionary fund manager for all shares mentioned in item 8.

14 Contact name:

Asset Value Investors Limited

Jake Crowhurst

15. Contact telephone name:

0207 659 4807