IQE plc : Holding(s) in Company

30 November 2011 IQE plc ("IQE" or the "Company") +------------------------------------------------------------------------------+ |TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES(i) | +------------------------------------------------------------------------------+ +----------------------------------------------+-------------------------------+ |1. Identity of the issuer or the underlying | | |issuer | IQE PLC| |of existing shares to which voting rights are | | |attached:(ii) | | +----------------------------------------------+-------------------------------+ |2 Reason for the notification (please tick the appropriate box or boxes): | +--------------------------------------------------------------------+---------+ |An acquisition or disposal of voting rights | X | +--------------------------------------------------------------------+---------+ |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):   |   | +--------------------------------------+-----------------------------+---------+ |3. Full name of person(s) subject to | | |the | T. Rowe Price Associates, Inc.| |notification obligation:(iii) | | +--------------------------------------+---------------------------------------+ |4. Full name of shareholder(s) | Chase Nominees Ltd.| | (if different from 3.):(iv) | National Australia Bank| | | Bank of New York Mellon Bank, N.A.| +--------------------------------------+---------------------------------------+ |5. Date of the transaction and date on| | |which the threshold is crossed or | 28 November 2011| |reached:(v) | | +--------------------------------------+---------------------------------------+ |6. Date on which issuer notified: | 29 November 2011| +--------------------------------------+---------------------------------------+ |7. Threshold(s) that is/are crossed or| 12%| |reached:(vi, vii) | | +--------------------------------------+---------------------------------------+ +----------------------------------------------------------------------------------+ |8. Notified details: | +----------------------------------------------------------------------------------+ |A: Voting rights attached to shares (viii, ix) | +------------+----------------------+----------------------------------------------+ |Class/type |Situation previous |Resulting situation after the triggering | |of |to the triggering |transaction | |shares |transaction | | | +----------+-----------+------------+-----------------+---------------+ |if possible |Number |Number |Number |Number of voting |% of  voting | |using |of |of |of shares |rights |rights (x) | |the ISIN | ares |V ting +------------+------+----------+------+--------+ |CODE | |Rights |Direct |Direct|Indirect |Direct|Indirect| | | | | |(xi) |(xii) | | | +------------+----------+-----------+------------+------+----------+------+--------+ |GB0009619924| | | | | | | | | |62,420,381|62,420,381 |  |  |63,128,413|  |12.02% | |  | | | | | | | | +------------+----------+-----------+------------+------+----------+------+--------+ +----------------------------------------------------------------------------------+ |B: Qualifying Financial Instruments | +----------------------------------------------------------------------------------+ |Resulting situation after the triggering transaction | +--------------+----------+-----------------------+------------------+-------------+ |Type of |Expiration|Exercise/ |Number of voting |% of voting | |financial |date(xiii)|Conversion Period(xiv) |rights that may be|rights | |instrument | | |acquired if the | | | | | |instrument is | | | | | |exercised/ | | | | | |converted. | | +--------------+----------+-----------------------+------------------+-------------+ |  |  |  |  |  | +--------------+----------+-----------------------+------------------+-------------+ +----------------------------------------------------------------------------------+ |C: Financial Instruments with similar economic effect to Qualifying Financial | |Instruments (xv, xvi) | +----------------------------------------------------------------------------------+ |Resulting situation after the triggering transaction | +-------------+---------+----------+-------------+------------------+--------------+ |Type of |Exercise |Expiration|Exercise/ |Number of voting |% of voting | |financial |price |date |Conversion |rights instrument |rights (xix, | |instrument | |(xvii) |period(xviii)|refers to |xx) | | | | | |  |  | +-------------+---------+----------+-------------+------------------+-------+------+ | | | | |  |Nominal|Delta | |  |  |  |  |  +-------+------+ | | | | | |  |  | +-------------+---------+----------+-------------+------------------+-------+------+ +----------------------------------------------------------------------------------+ |Total (A+B+C) | +------------------------------------+---------------------------------------------+ |Number of voting rights |Percentage of voting rights | +------------------------------------+---------------------------------------------+ |63,128,413 |12.02% | +------------------------------------+---------------------------------------------+ +------------------------------------------------------------------------------+ |9. Chain of controlled undertakings through which the voting rights and/or the| |financial instruments are effectively held, if applicable:(xxi) | +------------------------------------------------------------------------------+ |T. Rowe Price Associates, Inc. (TRP A) serves as investment adviser, with | |dispositive and voting authority, | |to various institutional clients that own shares ofIQE PIC, including the T. | |Rowe Price International | |Discovery Fund, which owns 44,743,479 shares. Such shares are registered in | |the following name(s): | |  | |Chase Nominees Ltd. - 54,459,589 | |  | |National Australia Bank - 5,692,985 | |  | |Bank of New York Mellon Bank, N.A. - 2,975,839 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ |Proxy Voting: | +----------------------------------------------+-------------------------------+ |10. Name of the 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: | | +-----------------------------+------------------------------------------------+ |14. Contact name: |Dorothy Jones, Assistant Vice President, T. Rowe| | | Price Associates, Inc.| +-----------------------------+------------------------------------------------+ |15. Contact telephone number:| 001 410 345 6603| +-----------------------------+------------------------------------------------+ This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: IQE plc via Thomson Reuters ONE [HUG#1567597]

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