(TLW.L) Tullow Oil PLC Buy/Sell

RNS Number : 1181C Tullow Oil PLC 06 November 2009

BLOCKLISTING SIX MONTHLY RETURN

Information provided on this form must be typed or printed electronically.

To: The FSA
The Irish Stock Exchange

Date: 06 November 2009

1. Name of applicant:

Tullow Oil plc

2. Name of scheme

Tullow Oil 2000 Executive Share Option Scheme ('2000 Scheme')

3. Period of return:

From: 5 May 2009 To: 4 November 2009

4. Balance under scheme from previous return:

1,710,991 - 2000 Scheme

5. The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return

7,000,000

6. Number of securities issued/allotted under scheme during period:
2,267,849 ordinary shares of 10p each issued under the 2000 scheme

7. Balance under scheme not yet issued/allotted at end of period
6,443,142 ordinary shares 10p split

6,443,142 - 2000 Scheme

8. Number and class of securities originally listed and the date of admission 2,200,000 ordinary shares of 10p each admitted on 5 November 2003
1,700,000 ordinary shares of 10p each admitted on 9 June 2004
5,000,000 ordinary shares of 10p each admitted on 11 October 2004
4,859,883 ordinary shares of 10p each admitted on 30 November 2006
3,500,000 ordinary shares of 10p each admitted on 23 March 2007
6,925,633 ordinary shares of 10p each admitted on 21 May 2008
7,000,000 ordinary shares of 10p each admitted on 20 August 2009

9. Total number of securities in issue at the end of the period

803,795,253

Name of contact: Richard Taylor

Address of contact 3rd Floor Building 11 Chiswick Park 566 Chiswick High Road

London W4 5YS Telephone number of contact 0208 996 1000

Signed by *Richard Taylor Director/company secretary/suitably experienced employee/duly authorised officer, for and on behalf of

Name of applicant *Tullow Oil plc

This information is provided by RNS The company news service from the London Stock Exchange

BLRFSIFFMSUSEDF