Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Aggreko plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

Yes

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issues 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:

Prudential plc group of companies

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

Pudential plc

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

17 March 2009

6. Date on which issuer notified:

18 March 2009

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

3%

8. Notified details:

A: Voting rights attached to shares

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

Direct

Direct

Indirect

Direct

Indirect

GB0001478998

Below 3%

Below 3%

8,208,182

8,208,182

3.01%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period/ Date

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

% of voting rights

N/A

N/A

N/A

N/A

N/A

Total (A+B)

Number of voting rights

% of voting rights

8,208,182

3.01%

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

Registered Holder

Holding

Prudential plc

8,208,182

JP Morgan Nominees

422,630

PRUCLT HSBC GIS NOM(UK) PAC AC

6,762,532

PRUCLT HSBC GIS NOM(UK) PPL AC

1,023,020

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

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

N/A

13. Additional information:

14. Contact name:

Peter Kennerley

15. Contact telephone number:

0141 225 5900