Blk Listing Six-Mnthly Return

Tullow Oil PLC
25 September 2000


Schedule 5 - Block Listing Six-Monthly Return

1   Name of company:
Tullow Oil plc

2   Name of Scheme:
Executive/Directors Share Option Schemes

3   Period of Return - From:
1/1/00

To:
30/06/00

4   Number and class of share(s) (amount of stock/debt security) not issued
under scheme at the end of last period:
1,362,374

5   Number of shares issued/allotted under scheme during period:
85,334

6   Balance under scheme not yet issued/allotted under scheme at end of
period:
1,277,040

7   Number and class of share(s) (amount of stock/debt securities) originally
listed and the date of admission: 
175,298,512 Ordinary @ IR10p each on 17 November 1994

Please confirm total number of shares in issue at the end of the period in
order for us to update our records:
275,254,186

Contact name for queries:
Tom Hickey

Contact telephone number:
[phone]

Contact address:
Airfield House
Airfield Park
Donnybrook
Dublin 4

Name of person making return:
Tom Hickey

Position of person making return:
Finance Director




Schedule 5 - Block Listing Six-Monthly Return

1   Name of company:
Tullow Oil plc

2   Name of Scheme:
Executive/Directors Share Option Schemes

3   Period of Return - From:
1/7/99

To:
31/12/99

4   Number and class of share(s) (amount of stock/debt security) not issued
under scheme at the end of last period:
1,852,374

5   Number of shares issued/allotted under scheme during period:
490,000

6   Balance under scheme not yet issued/allotted under scheme at end of
period:
1,362,374

7   Number and class of share(s) (amount of stock/debt securities) originally
listed and the date of admission: 
175,298,512 Ordinary @ IR10p each on 17 November 1994

Please confirm total number of shares in issue at the end of the period in
order for us to update our records:
275,168,852

Contact name for queries:
Tom Hickey

Contact telephone number:
[phone]

Contact address:
Airfield House
Airfield Park
Donnybrook
Dublin 4

Name of person making return:
Tom Hickey

Position of person making return:
Finance Director


Additional Information: