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:

Bowleven 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 qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

 No

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

 No

An event changing the breakdown of voting rights

 No

Other (please specify):

 No

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

 F&C Asset Management plc

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

 See box 9 below

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

22/02/2013

6. Date on which issuer notified:

 25/02/2013

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

 5%

8. Notified details:

A: Voting rights attached to shares

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

Direct

Direct

Indirect

Direct

Indirect

GB00B04PYL99

13,281,370

13,281,370

17,423,578

-

17,423,578

-

5.91%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/ConversionPeriod

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

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate

Exercise/Conversionperiod

Number of votingrights instrumentrefers to

% of voting rights

 - Contract for Difference

 n/a

 n/a

 n/a

 400,000

Nominal

Delta

 0.14

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 17,823,578

 6.05%

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

No underlying client holds >3%

Proxy Voting:

10. Name of the proxy holder:

 F&C Asset Management plc

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:

14. Contact name:

 Stephen Macnamara, F&C Asset Management plc

15. Contact telephone number:

 0131 718 1148

Annex: Notification of major interests in shares

A: Identity of the persons or legal entity subject to the notification obligation

Full name

(including legal form of legal entities)

Bowleven plc

Contact address

(registered office for legal entities)

The Cube

45 Leith Street

Edinburgh

EH1 3AT

UK

Phone number & email

Tel: +44 131 524 5678Fax: +44 131 524 5690

[email protected] (Company Secretarial Asst)

Other useful information

(at least legal representative for legal persons)

B: Identity of the notifier, if applicable

Full name

Stephen Macnamara, F&C Asset Management plc

Contact address

80 George Street, Edinburgh EH2 3BU

Phone number & email

0131 718 1148

[email protected]

Other useful information

(e.g. functional relationship with the person or legal entity subject to the notification obligation)

C: Additional information