TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESⁱ

1. Identity of the issuer or the underlying issuer
of existing shares to which voting rights are
attached: ii

The Alumasc Group plc   

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):

3. Full name of person(s) subject to the
notification obligation: iii

Aviva plc & its subsidiaries   

4. Full name of shareholder(s) 
 (if different from 3.):iv

Registered Holder:

Delta Lloyd Europees Deelnemingen Fonds

   3,257,702   

Delta Lloyd Luxembourg European Participation

Fund  379,000

5. Date of the transaction and date on
which the threshold is crossed or
reached: v

10 July 2009

6. Date on which issuer notified:

13 July 2009

7. Threshold(s) that is/are crossed or
reached: vi, vii

<10% to 10% Change at Indirect Interest Level

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of
shares

if possible using
the ISIN CODE

Situation previous
to the triggering
transaction

Resulting situation after the triggering transaction

Number
of
Shares

Number
of
Voting
Rights

Number
of shares

Number of voting
rights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ordinary Shares


GB0000280353

1,858,642

1,858,642

None

None

3,636,702

Nil

10.06%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Expiration
date xiii

Exercise/ 
Conversion Period xiv

Number of voting
rights that may be
acquired if the
instrument is
exercised/ converted.

% of voting
rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financial
instrument

Exercise price

Expiration date xvii

Exercise/
Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

3,636,702

10.06%

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable: xxi

The voting rights are managed and controlled by Delta Lloyd Asset Management NV, with the following chain of controlled undertakings:-

Delta Lloyd Asset Management NV:

• Aviva plc (Parent Company)

• Aviva Group Holdings Limited (wholly owned subsidiary of Aviva plc)

• Aviva International Insurance Limited (wholly owned subsidiary of Aviva Group Holdings Limited)

• Aviva Insurance Limited (wholly owned subsidiary of Aviva International Insurance Limited)

• Aviva International Holdings Limited (wholly owned subsidiary of Aviva Insurance Limited)

• CGU International Holdings BV (wholly owned subsidiary of Aviva International Holdings Limited)

• Delta Lloyd NV (majority owned subsidiary of CGU International Holdings BV)

• Delta Lloyd Asset Management NV (wholly owned subsidiary of Delta Lloyd NV)

Proxy Voting:

10. Name of the proxy holder:

See Section 4

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:

Figures are based on a total number of voting rights of  36,133,558.

14. Contact name:

   Neil Whittaker

15. Contact telephone number:

   01603 684420