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.):

See item 9.

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

6 May 2009

6. Date on which issuer notified:

7 May 2009

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

 See item 13.

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

16,236,191

16,236,191

16,157,595

16,157,595

5.91%

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

16,157,595

5.91%

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 (Parent company)

16,157,595 5.91

HSBC Seoul GL Basics Mother FD

688

Jackson Perspective GBL Basics

3,100

JNL/M&G Global Basics Fund

5,025

JP Morgan Nominees

344,034

Nortrust Nominee Ltd A/C MHF01

60,049

Nortrust Nominee Ltd A/C MKK01

5,000,000

Nortrust Noms Ltd

9,147

Nortrust Noms Ltd A/C MEJ01

2,900,000

PRUCLT HSBC GIS NOM(UK) PAC AC

6,762,532

PRUCLT HSBC GIS NOM(UK) PPL AC

1,073,020

M&G Group Limited (holly owned subsidiary of Prudential plc)

15,813,561 5.79

HSBC Seoul GL Basics Mother FD

688

Jackson Perspective GBL Basics

3,100

JNL/M&G Global Basics Fund

5,025

Nortrust Nominee Ltd A/C MHF01

60,049

Nortrust Nominee Ltd A/C MKK01

5,000,000

Nortrust Noms Ltd

9,147

Nortrust Noms Ltd A/C MEJ01

2,900,000

PRUCLT HSBC GIS NOM(UK) PAC AC

6,762,532

PRUCLT HSBC GIS NOM(UK) PPL AC

1,073,020

M&G Investment Management Limited (wholly owned subsidiary of  M&G Limited)

15,753,512 5.77

HSBC Seoul GL Basics Mother FD

688

Jackson Perspective GBL Basics

3,100

JNL/M&G Global Basics Fund

5,025

Nortrust Nominee Ltd A/C MKK01

5,000,000

Nortrust Noms Ltd

9,147

Nortrust Noms Ltd A/C MEJ01

2,900,000

PRUCLT HSBC GIS NOM(UK) PAC AC

6,762,532

PRUCLT HSBC GIS NOM(UK) PPL AC

1,073,020

M&G Limited (Wholly owned subsidiary of M&G Group Limited)

15,813,561 5.79

HSBC Seoul GL Basics Mother FD

688

Jackson Perspective GBL Basics

3,100

JNL/M&G Global Basics Fund

5,025

Nortrust Nominee Ltd A/C MHF01

60,049

Nortrust Nominee Ltd A/C MKK01

5,000,000

Nortrust Noms Ltd

9,147

Nortrust Noms Ltd A/C MEJ01

2,900,000

PRUCLT HSBC GIS NOM(UK) PAC AC

6,762,532

PRUCLT HSBC GIS NOM(UK) PPL AC

1,073,020

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:

As per 5.1.2 the non-exempt holdings for Prudential Plc are now below 3%.

14. Contact name:

Peter Kennerley

15. Contact telephone number:

0141 225 5900