Holding(s) in Company

12 October 2010 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 |   | +-----------------------------------------------------------------------+------+ |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):|Increase in issued Capital | X | +-----------------------+--------------+--------------------------------+------+ |3. Full name of person(s) subject to | | |the |Dr A W Nelson | |notification obligation:(iii) | | +--------------------------------------+---------------------------------------+ |4. Full name of shareholder(s) |  | | (if different from 3.):(iv) | | +--------------------------------------+---------------------------------------+ |5. Date of the transaction and date on| | |which the threshold is crossed or |05/10/10 | |reached: (v) | | +--------------------------------------+---------------------------------------+ |6. Date on which issuer notified: |08/10/10 | +--------------------------------------+---------------------------------------+ |7. Threshold(s) that is/are crossed or|6% | |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|27,391,303| 27,391,303| 27,391,303|27,391,303|  | 5.35%|  | +------------+----------+-----------+-------------+----------+--------+------+--------+ |   |   |   |   |   |   |   |   | +------------+----------+-----------+-------------+----------+--------+------+--------+ +-------------------------------------------------------------------------------------+ |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 |% of voting rights | |financial |price |date |Conversion |voting |(xix, xx) | |instrument | |(xvii) |period(xviii)|rights |  | | | | | |instrument | | | | | | |refers to | | | | | | |  | | +-------------+---------+----------+-------------+------------+---------------+-------+ | | | | |   |Nominal |Delta | |   |   |   |   |   +---------------+-------+ | | | | | |   |   | +-------------+---------+----------+-------------+------------+---------------+-------+ +-------------------------------------------------------------------------------------+ |Total (A+B+C) | +------------------------------------+------------------------------------------------+ |Number of voting rights |Percentage of voting rights | +------------------------------------+------------------------------------------------+ |27,391,303 |5.35% | +------------+++--------+-+--------+++-----------+++---------++-------++-----++-------+ +------------------------------------------------------------------------------+ |9. Chain of controlled undertakings through which the voting rights and/or the| |financial instruments are effectively held, if applicable:(xxi) | +------------------------------------------------------------------------------+ |  | |           23,318,844         Roy Nominees Limited / RBC | |             3,405,792         Brewin Nominees Limited (SIPP) | |               666,667         Dr A W Nelson | |  | [HUG#1451282] 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

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