Holding(s) in Company

SIG PLC 24 September 2007 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: SIG plc 2. Reason for the notification (please state Yes/No): ( ) An acquisition or disposal of voting rights (x) 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 : AEGON UK Group of Companies 4. Full name of shareholder(s) (if different from 3.): 5. Date of transaction (and date on which the threshold is crossed or reached if different) : 20 September 2007 6. Date on which issuer notified: 21 September 2007 7. Threshold(s) that is/are crossed or reached : 4% - 3% 8. Notified Details : A: Voting rights attached to shares Class/type of shares Situation previous to the triggering If possible using the ISIN CODE transaction GB0008025412 Number of Shares Number of Voting Rights 5,480,580 5,480,580 Voting rights attached to shares Class/type of shares Resulting situation after the triggering If possible using the ISIN CODE transaction Number of Shares Number of Voting Rights % of voting rights Direct Indirect Direct Indirect GB0008025412 5,140,580 4,742,114 398,466 3.51% 0.30% B: Financial Instruments Resulting situation after the triggering action Type of Financial Expiration Exercise/ Number of voting % of voting Instrument date conversion rights that may be rights Period/Date acquired if the Instrument is Exercised/converted Total (A + B) Number of voting rights % of voting rights 5,140,580 3.81% 9. Chain of controlled undertakings through which the voting rights and/or the inancial instruments are effectively held, if applicable : AEGON UK Group of Companies - parent undertaking of: AEGON Asset Management UK plc AEGON Investment Management UK Ltd AEGON ICVC Proxy Voting: 10. Name of the proxy holder: AEGON UK Group of Companies 11. Number of voting rights proxy holder will cease/acquire to hold: N/A 12. Date on which proxy holder will cease/acquire to hold voting rights: N/A 13. Additional information: AEGON UK Group of Companies consists of: AEGON Asset Management UK plc AEGON Investment Management UK Ltd AEGON ICVC 14. Contact Name: Miranda Beacham 15. Contact: 0131 549 3460 ANNEX Notification of Major Interests In Shares A. Identity of the person or legal entity subject to the notification obligation Full Name (including legal form for legal entities) AEGON Asset Management UK plc Contact Address: AEGON House 3 Lochside Avenue Edinburgh Park Edinburgh EH12 9SA Phone Number: 0870 60 90 101 Other useful information (at least legal representative for legal persons): Ian G Young, Company Secretary Tel: 0131 549 6398 This information is provided by RNS The company news service from the London Stock Exchange

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