Vesuvius Regulatory News (VSVS)

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

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

Vesuvius plc

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

An acquisition or disposal of voting rights: (YES)

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 notification obligation:

Artisan Partners Holdings LP, Artisan Partners Limited Partnership, Artisan Partners Asset Management, Inc., Artisan Investments GP LLC, Artisan Investment Corporation, ZFIC, Inc., Andrew A. Ziegler, Carlene M. Ziegler

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

State Street, Bank of New York, Mellon Bank, Northern Trust, JP Morgan Chase and Pictet & Cie

5. Date of the transaction (and date on which the threshold is crossed or reached if different): 16 January 2014

6. Date on which issuer notified: 17 January 2014 (after close of business)

7. Threshold(s) that is/are crossed or reached: Above 10%

8. Notified details:

A: Voting rights attached to shares

Resulting situation after the triggering transaction

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

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

Resulting situation after the triggering transaction

Total (A+B+C)

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

Proxy Voting:

Artisan Partners Limited Partnership ("APLP"), a U.S. registered investment adviser, is a limited partnership organized under the laws of the State of Delaware on March 26, 2009. Control of APLP is vested in its general partner, Artisan Investments GP LLC, a limited liability company organized under the laws of the State of Delaware on March 26, 2009. Artisan Partners Holdings LP is the sole member of Artisan Investments GP LLC, and is the sole limited partner of Artisan Partners Limited Partnership. Control of Artisan Partners Holdings LP (formerly named Artisan Partners Limited Partnership) is vested in its general partner, Artisan Partners Asset Management Inc. ("APAM"), a Delaware corporation. Pursuant to a Stockholders' Agreement dated March 12, 2013, entered into between certain shareholders of APAM, control of APAM is vested in Artisan Investment Corporation, a corporation organized under the laws of the State of Wisconsin. All of the outstanding stock of Artisan Investment Corporation is owned by ZFIC, Inc., a corporation organized under the laws of the State of Wisconsin. Andrew A. Ziegler and Carlene M. Ziegler each own 50% of the voting stock of ZFIC, Inc. APLP, pursuant to advisory contracts, has the power to purchase and sell securities on behalf of its clients and the power to vote for most clients. Persons other than APLP are entitled to receive all dividends from, and proceeds from the sale of, all of the securities reported hereunder.

Artisan International Value Fund ("ARTIV"), is a series of Artisan Partners Funds Inc., a U.S. registered investment company. Certain officers and a director of Artisan Partners Funds, Inc. are employees of APLP. APLP pursuant to its advisory contract with ARTIV has the power to purchase and sell securities on behalf of ARTIV and to vote for ARTIV. ARTIV, as of January 16, 2014, was interested in 19,449,002 shares, representing 7.2% of the 10.0% disclosed above, of Vesuvius PLC.

10. Name of the proxy holder: Artisan Partners Limited Partnership

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:

HENRY JAMES KNOWLES, COMPANY SECRETARY, VESUVIUS plc

15. Contact telephone number:

+ 44 (0)20 7822 0000