Holding(s) in Company

Hochschild Mining PLC
13 March 2007


TR - 1(i): 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):

Hochschild Mining plc


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

An acquisition or disposal of voting rights: (No)

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to 
which voting rights are attached: (No)

An event changing the breakdown of voting rights: (No)

Other (please specify): (Yes - Declaration of Major Shareholding under FSA Transitional Provision 7)


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

Eduardo Hochschild


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

N/a


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

N/a


6 Date on which issuer notified:

13 March 2007


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

3%


8 Notified details:

-

A: Voting rights attached to shares

Class/type of shares if possible              Situation previous to the
Using the ISIN Code                           Triggering transaction (vi)

                                              No of          No of
                                              Shares         voting rights (viii)

Ordinary                                      214,962,500    Same
GB00B1FW50029

Resulting situation after triggering the transaction (vii):

Class/type of shares   No of shares   No of voting rights    % of voting rights
if possible using                     (ix)
the ISIN Code

                       Direct         Direct  Indirect       Direct  Indirect
                                      (x)     (xi)

Ordinary               0              0       214,962,500    0       69.94%
GB00B1FW50029

B: Financial Instruments

Resulting situation after the triggering transaction (xii)

Type of        Expiration     Exercise/      Number of voting       % of voting
Financial      date (xiii)    conversion     rights that may be     rights
Instrument                     period/date    acquired if the
                               (xiv)          instrument is
                                              Exercised/converted


Total (A+B)

Number of voting rights                       % of voting rights
214,962,500                                   69.94%


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

1. Pelham Investment Corporation ('Pelham') directly owns 214,962,500 ordinary shares of the issuer.


2. Eduardo Hochschild controls the Board of Pelham. He controls and beneficially owns through intermediary companies 
more than eighty percent (80%) of the shares of Pelham. No other person controls Pelham.

Proxy Voting


10. Name of 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:

Eduardo Hochschild is making this notification to comply with the transitional provisions of the Disclosure and 
Transparency Rules. He is not notifying an acquisition or disposal of voting rights of the issuer.


14. Contact name:

Robert C. Muffly


15. Contact telephone number:

[phone]


Annex to 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):

Eduardo Hochschild


Contact address (registered office for legal entities):

Hochschild Mining (Peru) Corporation
Pasaje El Carmen No. 180
Urb. El Vivero de Monterrico
Surco - Lima 33
Peru

Phone Number:

[phone]


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

-

B.  Identity of notifier, if applicable (xvii):

Full name:

Robert C. Muffly

Contact address:

Becker, Glynn, Melamed & Muffly LLP
299 Park Ave.
New York, NY 10171

Phone Number:

[phone]

Other useful information:

Counsel




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