Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: 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):

RESTATEMENT OF UNDERLYING OWNERSHIP

Following a reduction in the stake of ownership of Delta Lloyd NV by Aviva plc, Delta Lloyd NV and its Group of Companies are no longer a controlled undertaking of Aviva plc.

√

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

Delta Lloyd NV and its Group of Companies

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

Registered Holder:

Banque de Luxembourg SA 850,000

Kas Bank NV 3,257,702

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

06 May 2011

6. Date on which issuer notified:

09 May 2011

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

0% to 11% Change at Indirect Interest Level

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ordinary SharesGB0000280353

0 (Previously disclosed in the name of Aviva plc -see notification of 1 April

2010)

0 (Previously disclosed in the name of Aviva plc -see notification of 1 April

2010)

4,107,702

Nil

4,107,702

Nil

11.37%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

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

Resulting situation after the triggering transaction

Type of financialinstrument

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

4,107,702

11.37%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial 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:

·; Delta Lloyd NV

·; 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 ceaseto hold:

12. Date on which proxy holder will cease to holdvoting rights:

13. Additional information:

Figures are based on a total number of voting rights of 36,133,558 shares as per your Total Voting Rights announcement dated 10 January 2008 .

14. Contact name:

Neil Whittaker, Aviva plc

John Douglas, The Alumasc Group plc

15. Contact telephone number:

01603 684420

01536 383844