Holding(s) in Company

Summit Corporation plc ("Summit plc" or "the Company") HOLDINGS IN SUMMIT CORPORATION PLC TR-1: Notification of Major Interests in Shares 3 July 2009, Oxford, UK 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: Summit Corporation Plc 2. Reason for notification (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 notification obligation: IP Group plc 4. Full name of shareholder(s) (if different from 3): IP2IPO Limited 5. Date of transaction (and date on which the threshold is crossed or reached if different): 3 July 2009 6. Date on which issuer notified: 3 July 2009 7.Threshold(s) that is/are crossed or reached: 5% 8: Notified Details A: Voting rights attached to shares +---------------------------------------------------------------------------------------------+ |Class/type of|Situation previous to the |Resulting situation after the triggering transaction| |shares |Triggering transaction | | | |--------------------------+----------------------------------------------------| | |Number of |Number of |Number of |Number of Voting |% of Voting Rights | | |shares |Voting Rights |Shares |Rights | | | | | | |--------------------+--------------------| | | | | |Direct |Indirect |Direct |Indirect | |-------------+----------+---------------+----------+----------+---------+---------+----------| |GB00B02T3K57 |3,040,400 |3,040,400 |2,440,400 |2,440,400 | |4.19 | | +---------------------------------------------------------------------------------------------+ B: Financial Instruments +------------------------------------------------------------------------------+ |Resulting situation after the triggering transaction | |------------------------------------------------------------------------------| |Type of |Expiration|Exercise/Conversion|Number of voting rights that |% of | |Financial |date |Period/Date |may be acquired if the |voting| |instrument| | |instrument is |rights| | | | |exercised/converted | | |----------+----------+-------------------+-----------------------------+------| | | | | | | +------------------------------------------------------------------------------+ Total (A+B) +----------------------------------------------+ | Number of voting rights | % of voting rights | |-------------------------+--------------------| | 2,440,400 | 4.19 | +----------------------------------------------+ 9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable: Proxy Voting: 10. Name of 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: IP2IPO Limited is a wholly owned subsidiary of IP Group plc 14. Contact name: Magnus Goodlad 15. Contact telephone name: 0207 4440050 ---END OF MESSAGE--- This announcement was originally distributed by Hugin. The issuer is solely responsible for the content of this announcement.