Holding(s) in Company

ARC International plc
                  

TR-1: notification of major interests in shares

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1. Identity of the issuer or the underlying issuer of            ARC International Plc
 existing shares to which voting rights are attached:
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2. Reason for the notification (please tick the appropriate box or boxes):
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An acquisition or disposal of voting rights                                             X
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An acquisition or disposal of financial instruments which may result in the
 acquisition of shares already issued to which voting rights are attached
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An event changing the breakdown of voting rights
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3. Full name of person(s) subject to the notification         Gartmore Investment Limited
 obligation:
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4. Full name of shareholder(s) (if different from 3.):                    n/a
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5. Date of the transaction and date on which the                       4 May 2007
 threshold is crossed or reached:
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6. Date on which issuer notified:                                     18 May 2007
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7. Threshold(s) that is/are crossed or reached:                        Above 13%
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8. Notified details:
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A: Voting rights attached to shares
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Class/type of Situation previous to   Resulting situation after the triggering transaction
 shares        the Triggering
if possible    transaction
 using the    ----------------------------------------------------------------------------------
 ISIN CODE    Number of  Number of    Number of  Number of voting rights % of voting rights
               Shares     Voting       shares
                          Rights      ----------------------------------------------------------
                                      Direct     Direct       Indirect   Direct    Indirect
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GB0009645481  18,254,746 18,254,746   19,795,279              19,795,279           13.018%
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B: Financial Instruments
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Resulting situation after the triggering transaction
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Type of financial Expiration   Exercise/ Conversion  Number of voting rights% of voting
 instrument        date         Period/ Date          that may be acquired   rights
                                                      if the instrument is
                                                      exercised/ converted.
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Total (A+B)
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Number of voting rights                     % of voting rights
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19,795,279                                  13.018%
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9. Chain of controlled undertakings through which the voting rights and/or the financial
 instruments are effectively held, if applicable:
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Proxy Voting:
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10. Name of the proxy holder:                                                          N/A
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11. Number of voting rights proxy holder will cease to
 hold:                                                                                 N/A
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12. Date on which proxy holder will cease to hold voting
 rights:                                                                               N/A
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13. Additional information:           All shares are held indirectly
                                      All figures are based on the Companies issued share
                                       capital of 152,059,296
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14. Contact name:                     Charles Rendell
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15. Contact telephone number:         01727 891430
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