Block / Subarea | Licence | Operator | Operator's Group | Equity Holder | Equity Holder's Group | Interest |
21/1a ALL | P2498 | NEO ENERGY (ZEX) LIMITED | NEO ENERGY GROUP | JERSEY PETROLEUM LTD | JERSEY OIL AND GAS PLC | 20 |
| | | | NEO ENERGY (ZEX) LIMITED | NEO ENERGY GROUP | 50 |
| | | | SERICA ENERGY (UK) LIMITED | SERICA ENERGY | 30 |
|
21/1b ALL | P2640 | NO OPERATOR | NO OPERATOR | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 100 |
|
21/1c NNBUC
 | P241 | REPSOL RESOURCES UK LIMITED | REPSOL RESOURCES UK | REPSOL DELTA LIMITED | REPSOL RESOURCES UK | 100 |
|
21/1d ALL | P2170 | NEO ENERGY (ZEX) LIMITED | NEO ENERGY GROUP | JERSEY PETROLEUM LTD | JERSEY OIL AND GAS PLC | 8 |
| | | | JERSEY V&C LTD | JERSEY OIL AND GAS PLC | 12 |
| | | | NEO ENERGY (ZEX) LIMITED | NEO ENERGY GROUP | 50 |
| | | | SERICA ENERGY (UK) LIMITED | SERICA ENERGY | 30 |
|
21/2a ALL | P2612 | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 100 |
|
21/2c CRW
 | P244 | REPSOL RESOURCES UK LIMITED | REPSOL RESOURCES UK | REPSOL DELTA LIMITED | REPSOL RESOURCES UK | 100 |
|
21/2d ALL | P2350 | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 44 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 12 |
| | | | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 44 |
|
21/3a AREA A | P118 | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 75 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 25 |
|
21/3a AREA B | P118 | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 44 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 12 |
| | | | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 44 |
|
21/3b AREA A | P741 | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 100 |
|
21/3b AREA B | P741 | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 44 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 12 |
| | | | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 44 |
|
21/3d ALL | P2350 | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 44 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 12 |
| | | | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 44 |
|
21/4a ALL | P347 | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | CHRYSAOR (U.K.) SIGMA LIMITED | HARBOUR ENERGY PLC | 62 |
| | | | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 24.3 |
| | | | ITHACA MA LIMITED | ITHACA ENERGY | 13.7 |
|
21/4c ALL | P2350 | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 44 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 12 |
| | | | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 44 |
|
21/5a ALL | P103 | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | CHRYSAOR PRODUCTION (U.K.) LIMITED | HARBOUR ENERGY PLC | 50 |
| | | | ITHACA GSA LIMITED | ITHACA ENERGY | 50 |
|
21/5c ALL | P2013 | NEO ENERGY PATHWAY LIMITED | NEO ENERGY GROUP | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 100 |
|
21/5d ALL | P2013 | NO OPERATOR | NO OPERATOR | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 100 |
|
21/6a ALL | P2640 | NO OPERATOR | NO OPERATOR | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 100 |
|
21/6b ALL | P2006 | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 100 |
|
21/7b ALL | P2640 | NO OPERATOR | NO OPERATOR | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 100 |
|
21/8a REST
 | P1107 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
| | | | WALDORF CNS (II) LIMITED | WALDORF PRODUCTION | 50 |
|
21/8a SCOLTY
 | P1107 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
| | | | WALDORF CNS (II) LIMITED | WALDORF PRODUCTION | 50 |
|
21/9a FORT
 | P57 | APACHE NORTH SEA LIMITED | APACHE CORPORATION | APACHE NORTH SEA LIMITED | APACHE CORPORATION | 100 |
|
21/9d ALL | P2333 | NO OPERATOR | NO OPERATOR | INEOS FPS LIMITED | INEOS INDUSTRIES | 100 |
|
21/10a ALL | P246 | APACHE NORTH SEA LIMITED | APACHE CORPORATION | APACHE NORTH SEA LIMITED | APACHE CORPORATION | 100 |
|
21/12a ALL | P73 | ENQUEST HEATHER LIMITED | ENQUEST PLC | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
|
21/12b ALL | P2530 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 40 |
| | | | FINDER ENERGY UK LIMITED | FINDER ENERGY PTY | 60 |
|
21/12c CRATHES
 | P1617 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
| | | | WALDORF CNS (II) LIMITED | WALDORF PRODUCTION | 50 |
|
21/12c REST
 | P1617 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
| | | | WALDORF CNS (II) LIMITED | WALDORF PRODUCTION | 50 |
|
21/13a CRATHES
 | P1617 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
| | | | WALDORF CNS (II) LIMITED | WALDORF PRODUCTION | 50 |
|
21/13a REST
 | P1617 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
| | | | WALDORF CNS (II) LIMITED | WALDORF PRODUCTION | 50 |
|
21/13b ALL | P2530 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 40 |
| | | | FINDER ENERGY UK LIMITED | FINDER ENERGY PTY | 60 |
|
21/14b ALL | P2530 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 40 |
| | | | FINDER ENERGY UK LIMITED | FINDER ENERGY PTY | 60 |
|
21/17a ALL | P2530 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 40 |
| | | | FINDER ENERGY UK LIMITED | FINDER ENERGY PTY | 60 |
|
21/18a ALL | P238 | ENQUEST HEATHER LIMITED | ENQUEST PLC | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
|
21/18b ALL | P2530 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 40 |
| | | | FINDER ENERGY UK LIMITED | FINDER ENERGY PTY | 60 |
|
21/18d ALL | P2530 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 40 |
| | | | FINDER ENERGY UK LIMITED | FINDER ENERGY PTY | 60 |
|
21/19a GADWALL/MALLARD
 | P238 | ENQUEST HEATHER LIMITED | ENQUEST PLC | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
|
21/19a REST | P238 | ENQUEST HEATHER LIMITED | ENQUEST PLC | ENQUEST HEATHER LIMITED | ENQUEST PLC | 100 |
|
21/19b ALL | P238 | ENQUEST HEATHER LIMITED | ENQUEST PLC | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | ENQUEST HEATHER LIMITED | ENQUEST PLC | 50 |
|
21/19c ALL | P2532 | NO OPERATOR | NO OPERATOR | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 19.3269225 |
| | | | ITHACA SP E&P LIMITED | ITHACA ENERGY | 61.346155 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 19.3269225 |
|
21/20a ALL | P185 | ITHACA SP E&P LIMITED | ITHACA ENERGY | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 19.3269225 |
| | | | ITHACA SP E&P LIMITED | ITHACA ENERGY | 61.346155 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 19.3269225 |
|
21/23b ALL | P353 | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 100 |
|
21/24a E
 | P21 | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 100 |
|
21/24d ALL | P2535 | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 100 |
|
21/25a LOWER
 | P13 | ANASURIA OPERATING COMPANY LIMITED | ANASURIA OPERATING COMPANY LIMITED | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 50 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 50 |
|
21/25a REST
 | P13 | ANASURIA OPERATING COMPANY LIMITED | ANASURIA OPERATING COMPANY LIMITED | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 50 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 50 |
|
21/25a UPPER
 | P13 | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | SERICA ENERGY MISTRAL LIMITED | SERICA ENERGY | 50 |
|
21/25b A
 | P13 | SHELL U.K. LIMITED | SHELL PLC | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 50 |
| | | | SHELL U.K. LIMITED | SHELL PLC | 50 |
|
21/25c ALL | P2641 | NO OPERATOR | NO OPERATOR | NEO ENERGY (ZEX) LIMITED | NEO ENERGY GROUP | 100 |
|
21/26a ALL | P2639 | NO OPERATOR | NO OPERATOR | NORTH SEA NATURAL RESOURCES LTD | NORTH SEA NATURAL RESOURCES | 100 |
|
21/27a ALL | P2244 | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | ORCADIAN ENERGY (CNS) LTD | ORCADIAN ENERGY | 18.75 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 81.25 |
|
21/28b ALL | P2451 | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 42.5 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 42.5 |
| | | | RAPID OIL PRODUCTION LTD | RAPID OIL PRODUCTION | 15 |
|
21/29a ALL | P21 | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 100 |
|
21/29b ALL | P215 | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | SERICA ENERGY MISTRAL LIMITED | SERICA ENERGY | 50 |
|
21/30a LOWER
 | P13 | ANASURIA OPERATING COMPANY LIMITED | ANASURIA OPERATING COMPANY LIMITED | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 50 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 50 |
|
21/30a REST
 | P13 | ANASURIA OPERATING COMPANY LIMITED | ANASURIA OPERATING COMPANY LIMITED | ANASURIA HIBISCUS UK LIMITED | HIBISCUS PETROLEUM | 50 |
| | | | PING PETROLEUM UK PLC | PING PETROLEUM LIMITED | 50 |
|
21/30a UPPER
 | P13 | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 50 |
| | | | SERICA ENERGY MISTRAL LIMITED | SERICA ENERGY | 50 |
|
21/30b A
 | P13 | SHELL U.K. LIMITED | SHELL PLC | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 50 |
| | | | SHELL U.K. LIMITED | SHELL PLC | 50 |
|
21/30c A
 | P13 | SERICA ENERGY CHINOOK LIMITED | SERICA ENERGY | SERICA ENERGY CHINOOK LIMITED | SERICA ENERGY | 100 |
|
21/30d C
 | P13 | SHELL U.K. LIMITED | SHELL PLC | NEO ENERGY PETROLEUM LIMITED | NEO ENERGY GROUP | 50 |
| | | | SHELL U.K. LIMITED | SHELL PLC | 50 |
|
21/30f ALL | P1792 | SERICA ENERGY CHINOOK LIMITED | SERICA ENERGY | SERICA ENERGY CHINOOK LIMITED | SERICA ENERGY | 100 |
|
21/30g ALL | P2643 | NO OPERATOR | NO OPERATOR | DANA PETROLEUM (E&P) LIMITED | DANA PETROLEUM LIMITED | 51.9653 |
| | | | SERICA ENERGY MISTRAL LIMITED | SERICA ENERGY | 46.42 |
| | | | WALDORF PRODUCTION UK PLC | WALDORF PRODUCTION | 1.6147 |
|
21/30h ALL | P2642 | NO OPERATOR | NO OPERATOR | PAINTED WOLF RESOURCES LIMITED | PAINTED WOLF RESOURCES | 100 |