Holding(s) in Company

Filtrona plc 06 December 2006 FILTRONA PLC HOLDING(S) IN COMPANY 6 December 2006 Filtrona plc announces it was informed on 5 December 2006 that, following a recent in specie transfer of 604,860 shares, AMVESCAP PLC (AMVESCAP) and subsidiary companies on behalf of discretionary clients have an interest within the meaning of Part VI of the Act in 32,971,572 Ordinary 25p Shares of Filtrona plc (representing 15.03%), details of that interest, together with a breakdown between registered holders (as required by Section 202(3) of the Act), are set out below:- Bank of Ireland (Dublin) 530,256 Bank of New York 121,352 Bank of New York (Brussels) 58,359 JP Morgan Chase (Hong Kong) 151,759 Chase Nominees 760,144 Vidacos Nominees Limited 25,221,948 HSBC Nominees 676,189 Japan Trustee Services Bank 3,641 Mellon Bank, Pittsburgh 229,049 State Street Trust & Banking Co. (London) 3,003,000 Trust & Custody Service JP 7,096 Northern Trust Company (London) 444,779 AIM Trimark 1,764,000 Filtrona plc was advised that none of these shares are beneficially owned by AMVESCAP. Subsidiary companies of AMVESCAP have a large number of portfolio management clients for whom they act as investment manager and investment advisor and by virtue of Section 203 of the Companies Act 1985 AMVESCAP is deemed to have the same interest in the shares. Name of contact and telephone number for queries Patricia Kingdon Deputy Company Secretary 01908 359100 Name of authorised company official responsible for making this notification Jon Green Company Secretary and General Counsel 01908 359100 This information is provided by RNS The company news service from the London Stock Exchange

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