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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

O'brien, Alan

    Related profiles found in government register
  • O'brien, Alan
    British born in June 1957

    Registered addresses and corresponding companies
  • O'brien, Alan
    British solicitor born in June 1957

    Registered addresses and corresponding companies
  • O'brien, Alan
    British

    Registered addresses and corresponding companies
  • O'brien, Alan, Mr.
    British solicitor

    Registered addresses and corresponding companies

    • Moon Lodge, 33 Burgess Wood Road South, Beaconsfield, Buckinghamshire, HP9 1EL

      IIF 38 IIF 39 IIF 40
  • O'brian, Alan
    British

    Registered addresses and corresponding companies

    • 21 Wethered Park, Marlow, Buckinghamshire, SL7 2BH

      IIF 41
  • O'brien, Alan
    British born in June 1957

    Resident in England

    Registered addresses and corresponding companies

    • C/o Deloitte Llp, 1 New Street Square, London, EC4A 3HQ

      IIF 42
  • O'brien, Alan
    British chief legal officer born in June 1957

    Resident in England

    Registered addresses and corresponding companies

    • Second Floor, Building 3, Arc Uxbridge, Sanderson Road, Uxbridge, UB8 1DH, United Kingdom

      IIF 43
  • O'brien, Alan
    British general counsel born in June 1957

    Resident in England

    Registered addresses and corresponding companies

    • Prospect House, 97 Oxford Road, Uxbridge, UB8 1LU, United Kingdom

      IIF 44
  • O'brien, Alan, Mr.
    British born in June 1957

    Resident in Uk

    Registered addresses and corresponding companies

    • Charter Place, Vine Street, Uxbridge, Middlesex, UB8 1JG

      IIF 45
  • O'brien, Alan, Mr.
    British solicitor born in June 1957

    Resident in Uk

    Registered addresses and corresponding companies
  • O'brien, Alan, Mr.
    British vp legal & risk mgmt born in June 1957

    Resident in Uk

    Registered addresses and corresponding companies

    • Charter Place, Vine Street, Uxbridge, Middlesex, UB8 1JG

      IIF 50
  • O'brien, Alan

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments 42
  • 1
    BEACH ENERGY (BASS GAS) LIMITED - now
    LATTICE ENERGY RESOURCES (BASS GAS) LIMITED - 2019-12-02
    ORIGIN ENERGY NORTHWEST LIMITED - 2017-06-28
    BORAL ENERGY NORTHWEST LIMITED - 2000-05-02
    SAGASCO NORTHWEST LIMITED
    - 1995-10-06 02397248
    LASMO OIL (AUSTRALIA) LIMITED
    - 1993-04-08 02397248
    LASMO SHELF NO. 1 LIMITED - 1989-08-16
    2 New Street Square, London, United Kingdom
    Active Corporate (33 parents)
    Officer
    1993-03-25 ~ 1993-05-08
    IIF 1 - Director → ME
  • 2
    CENTRICA PRODUCTION (DMF) LIMITED - now
    VENTURE PRODUCTION (DMF) LIMITED - 2011-09-12
    CH4 DMF LIMITED - 2006-12-01
    ENI DMF LIMITED - 2004-05-28
    LASMO (DMF) LIMITED
    - 2003-04-10 01483729
    DNO OFFSHORE LIMITED - 1996-04-23
    PEKO OIL NORTH SEA PLC - 1990-10-10
    NORTH SEA & GENERAL OIL OPERATIONS PLC - 1988-01-04
    DAWSEA PUBLIC LIMITED COMPANY - 1985-01-22
    Millstream, Maidenhead Road, Windsor, Berkshire
    Dissolved Corporate (51 parents)
    Officer
    2001-11-09 ~ 2002-07-19
    IIF 29 - Secretary → ME
  • 3
    CNOOC ETTRICK U.K. LIMITED - now
    CNOOC ETTRICK U.K LIMITED - 2019-01-14
    NEXEN ETTRICK U.K. LIMITED
    - 2019-01-14 03976014
    ENCANA (ETTRICK) LIMITED
    - 2004-12-02 03976014
    PANCANADIAN PETROLEUM (ETTRICK) LIMITED - 2002-04-29
    BP AMOCO EXPLORATION (ETTRICK) LIMITED - 2000-12-11
    Second Floor Building 3, Arc Uxbridge, Sanderson Road, Uxbridge, United Kingdom
    Active Corporate (42 parents)
    Officer
    2005-03-09 ~ 2011-01-20
    IIF 48 - Director → ME
    2002-08-06 ~ 2007-05-15
    IIF 38 - Secretary → ME
  • 4
    CNOOC PETROLEUM COLOMBIA LIMITED
    FC036106
    Fifth Floor, 37 Esplanade, St Helier, Jersey
    Active Corporate (9 parents, 1 offspring)
    Officer
    2019-03-27 ~ 2025-06-27
    IIF 44 - Director → ME
    2019-05-16 ~ 2025-06-27
    IIF 57 - Secretary → ME
  • 5
    CNOOC PETROLEUM EUROPE LIMITED - now
    NEXEN PETROLEUM U.K. LIMITED
    - 2019-01-14 01051137
    ENCANA (U.K.) LIMITED
    - 2004-12-02 01051137
    PANCANADIAN PETROLEUM(U.K.)LIMITED - 2002-01-10
    Second Floor, Building 3 Arc Uxbridge, Sanderson Road, Uxbridge, United Kingdom
    Active Corporate (63 parents, 4 offsprings)
    Officer
    2005-03-09 ~ 2011-01-20
    IIF 47 - Director → ME
    2002-07-30 ~ 2006-11-29
    IIF 40 - Secretary → ME
  • 6
    CNOOC PETROLEUM FARRAGON U.K. LIMITED - now
    NEXEN PETROLEUM DRAGON U.K. LIMITED
    - 2019-01-14 05645503
    BRITCANA ENERGY LTD
    - 2010-08-20 05645503
    Second Floor Building 3, Arc Uxbridge, Sanderson Road, Uxbridge, United Kingdom
    Active Corporate (32 parents, 1 offspring)
    Officer
    2010-04-13 ~ 2011-01-20
    IIF 49 - Director → ME
  • 7
    CNOOC PETROLEUM MAURITANIA LIMITED
    11900990
    C/o Deloitte Llp, 1 New Street Square, London
    Dissolved Corporate (14 parents)
    Officer
    2019-03-23 ~ dissolved
    IIF 42 - Director → ME
  • 8
    CNOOC UK LIMITED
    08391492
    Second Floor, Building 3 Arc Uxbridge, Sanderson Road, Uxbridge, United Kingdom
    Active Corporate (26 parents, 6 offsprings)
    Officer
    2021-12-07 ~ 2025-06-27
    IIF 43 - Director → ME
  • 9
    DOVETAIL MANAGEMENT SOFTWARE LIMITED
    02530059
    92 Park Street, Camberley, Surrey
    Dissolved Corporate (4 parents)
    Officer
    (before 1991-08-13) ~ 1991-09-17
    IIF 7 - Director → ME
    (before 1991-08-13) ~ 1991-09-17
    IIF 13 - Secretary → ME
  • 10
    ENCANA (U.K.) HOLDINGS LIMITED
    - now 04825184
    HOUSEFORMAT LIMITED
    - 2003-08-28 04825184
    Floor 8, Assembly Building C, Cheese Lane, Bristol
    Liquidation Corporate (20 parents)
    Officer
    2003-08-12 ~ 2003-09-29
    IIF 8 - Director → ME
    2003-08-12 ~ 2004-11-24
    IIF 56 - Secretary → ME
  • 11
    ENI AMBALAT LIMITED - now
    LASMO AMBALAT LIMITED
    - 2003-06-27 03968980
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (28 parents)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 55 - Secretary → ME
  • 12
    ENI AUSTRALIA LIMITED - now
    AGIP AUSTRALIA LIMITED
    - 2003-04-10 01020949 02664257
    BRITISH-BORNEO AUSTRALIA LIMITED - 2000-12-14
    HARDY PETROLEUM LIMITED - 1999-03-01
    TRAFALGAR HOUSE PETROLEUM LIMITED - 1989-05-03
    DOLPHIN PETROLEUM LIMITED - 1986-06-01
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (56 parents)
    Officer
    2001-12-11 ~ 2002-07-19
    IIF 33 - Secretary → ME
  • 13
    ENI BTC LIMITED - now
    AGIP (BTC) LIMITED
    - 2003-02-28 01044120
    LASMO FINANCE LIMITED
    - 2001-12-18 01044120
    HALKYN OIL & GAS LIMITED - 1982-03-01
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (36 parents)
    Officer
    1999-02-01 ~ 2002-08-13
    IIF 12 - Director → ME
    2001-11-09 ~ 2002-08-13
    IIF 19 - Secretary → ME
  • 14
    ENI BUKAT LIMITED - now
    LASMO (BUKAT) LIMITED
    - 2003-06-27 03856870
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (30 parents)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 52 - Secretary → ME
  • 15
    ENI ENERGY LIMITED - now
    MONUMENT ENERGY LIMITED
    - 2003-04-10 00176270
    RENOWN ENERGY LIMITED - 1990-01-15
    KLEINWORT BENSON ENERGY LIMITED - 1988-03-07
    TRANS-EUROPEAN COMPANY LIMITED(THE) - 1985-10-29
    Ebury Bridge House, 10 Ebury Bridge Road, London
    Dissolved Corporate (20 parents)
    Officer
    1999-06-30 ~ 2002-07-19
    IIF 3 - Director → ME
    1999-06-30 ~ 2002-07-19
    IIF 34 - Secretary → ME
  • 16
    ENI GANAL LIMITED - now
    LASMO GANAL LIMITED
    - 2003-06-27 03771954
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (34 parents)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 17 - Secretary → ME
  • 17
    ENI INDONESIA LIMITED - now
    LASMO INDONESIA LIMITED
    - 2003-06-23 02334535
    TRUSHELFCO (NO. 1372) LIMITED - 1989-02-16
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (55 parents, 12 offsprings)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 32 - Secretary → ME
  • 18
    ENI INTERNATIONAL LIMITED - now
    LASMO INTERNATIONAL LIMITED
    - 2003-04-10 01431033
    LASMO INTERNATIONAL OIL DEVELOPMENT LIMITED - 1989-06-08
    LASMO (PHILIPPINES) LIMITED - 1980-12-31
    TRUSHELFCO (NO. 231) LIMITED - 1979-12-31
    Ebury Bridge House, 10 Ebury Bridge Road, London
    Dissolved Corporate (28 parents)
    Officer
    2001-06-08 ~ 2002-08-08
    IIF 4 - Director → ME
    1999-04-30 ~ 2002-08-08
    IIF 23 - Secretary → ME
  • 19
    ENI INVESTMENTS PLC - now
    AGIP INVESTMENTS PLC
    - 2003-05-30 04126448
    NR CORP PLC - 2000-12-20
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (35 parents, 1 offspring)
    Officer
    2002-03-22 ~ 2002-09-18
    IIF 18 - Secretary → ME
  • 20
    ENI JPDA 03-13 LIMITED - now
    AGIP AUSTRALIA 91-13 LIMITED
    - 2003-04-10 02664257 01020949
    BRITISH-BORNEO AUSTRALIA 91-13 LIMITED - 2000-12-15
    BRITISH-BORNEO TIMOR GAP PETROLEUM LIMITED - 1999-03-29
    HARDY TIMOR GAP PETROLEUM LIMITED - 1999-03-01
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (55 parents)
    Officer
    2001-12-11 ~ 2002-07-19
    IIF 20 - Secretary → ME
  • 21
    ENI KRUENG MANE LIMITED - now
    LASMO KRUENG MANE LIMITED
    - 2003-06-27 03562003
    LASMO PETROLEUM DEVELOPMENT LIMITED
    - 1999-03-11 03562003
    Eni House, 10 Ebury Bridge Road, London
    Dissolved Corporate (41 parents)
    Officer
    1999-02-01 ~ 1999-02-22
    IIF 9 - Director → ME
    2002-01-11 ~ 2002-07-19
    IIF 14 - Secretary → ME
  • 22
    ENI LASMO PLC - now
    LASMO PLC
    - 2003-05-07 01008965
    LONDON & SCOTTISH MARINE OIL PLC - 1989-07-01
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (71 parents, 13 offsprings)
    Officer
    1999-04-30 ~ 2002-07-19
    IIF 37 - Secretary → ME
  • 23
    ENI LNS LIMITED - now
    ENI LNS PLC - 2003-06-13
    LASMO NORTH SEA PLC
    - 2003-04-10 00970280
    SCOTTISH CANADIAN OIL & TRANSPORTATION COMPANY LIMITED - 1981-12-31
    SCOTTISH CANADIAN OIL & TRANSPORTATION COMPANY LIMITED - 1980-12-31
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (55 parents, 1 offspring)
    Officer
    1999-04-30 ~ 2002-07-19
    IIF 28 - Secretary → ME
  • 24
    ENI MEP LIMITED - now
    MONUMENT EXPLORATION AND PRODUCTION LIMITED
    - 2003-04-10 00231611
    CHEMICAL & ALLIED TRUST LIMITED - 1985-02-15
    Ebury Bridge House, 10 Ebury Bridge Road, London
    Dissolved Corporate (26 parents)
    Officer
    1999-06-30 ~ 2002-07-19
    IIF 27 - Secretary → ME
  • 25
    ENI MIDDLE EAST LIMITED - now
    LASMO EXPLORATION (MIDDLE EAST) LIMITED
    - 2003-04-10 03180997
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (44 parents)
    Officer
    2000-12-14 ~ 2002-08-08
    IIF 11 - Director → ME
    2002-01-11 ~ 2002-08-08
    IIF 24 - Secretary → ME
  • 26
    ENI MOG LIMITED - now
    ENI MOG PLC - 2003-06-13
    MONUMENT OIL AND GAS PLC
    - 2003-04-10 03211318
    MONUMENT OIL AND GAS (HOLDINGS) PLC - 1996-08-16
    Ebury Bridge House, 10 Ebury Bridge Road, London
    Dissolved Corporate (33 parents, 1 offspring)
    Officer
    1999-07-30 ~ 2002-07-19
    IIF 53 - Secretary → ME
  • 27
    ENI OIL ALGERIA LIMITED - now
    LASMO OIL (ALGERIA) LIMITED
    - 2003-04-10 02274210
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (63 parents)
    Officer
    2001-08-24 ~ 2002-08-08
    IIF 10 - Director → ME
    2001-11-09 ~ 2002-08-08
    IIF 15 - Secretary → ME
  • 28
    ENI OVERSEAS HOLDINGS LIMITED - now
    LASMO OVERSEAS HOLDINGS LIMITED
    - 2003-04-10 01431776
    LASMO (SHARJAH) LIMITED - 1981-12-31
    LASMO (SHARJAH) LIMITED - 1980-12-31
    TRUSHELFCO (NO. 229) LIMITED - 1979-12-31
    Ebury Bridge House, 10 Ebury Bridge Road, London
    Dissolved Corporate (26 parents)
    Officer
    1999-02-01 ~ 2002-07-19
    IIF 5 - Director → ME
    1999-04-30 ~ 2002-07-19
    IIF 30 - Secretary → ME
  • 29
    ENI RAPAK LIMITED - now
    LASMO RAPAK LIMITED
    - 2003-06-27 03771987
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (34 parents)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 51 - Secretary → ME
  • 30
    ENI RESOURCES LIMITED - now
    MONUMENT RESOURCES LIMITED
    - 2003-04-10 02161862
    RENOWN PETROLEUM LIMITED - 1990-01-15
    K B E EXPLORATION LIMITED - 1988-03-07
    SKYMINE LIMITED - 1987-10-21
    Eni House, 10 Ebury Bridge Road, London
    Dissolved Corporate (30 parents)
    Officer
    1999-06-30 ~ 2002-07-19
    IIF 16 - Secretary → ME
  • 31
    ENI SECURITIES LIMITED - now
    LASMO SECURITIES LIMITED
    - 2003-04-10 02351633
    FILECRAM LIMITED - 1989-04-04
    Eni House, 10 Ebury Bridge Road, London
    Dissolved Corporate (26 parents)
    Officer
    1999-02-01 ~ 2002-08-27
    IIF 2 - Director → ME
    2002-01-11 ~ 2002-08-27
    IIF 26 - Secretary → ME
  • 32
    ENI TNS LIMITED - now
    LASMO (TNS) LIMITED
    - 2003-04-11 SC055200
    RECORD BOOKS LIMITED - 1989-04-10
    THOMSON NORTH SEA LIMITED - 1989-03-16
    INTERNATIONAL THOMSON PLC - 1988-12-14
    THOMSON NORTH SEA PLC - 1986-11-28
    6 Queens Road, Aberdeen, Scotland, Scotland
    Active Corporate (56 parents)
    Officer
    2001-11-10 ~ 2002-07-19
    IIF 31 - Secretary → ME
  • 33
    ENI TTO LIMITED - now
    ENI TTO PLC - 2003-07-01
    LASMO (TTO) PLC
    - 2003-05-07 00196665
    TRYMERGE PUBLIC LIMITED COMPANY - 1989-06-26
    THOMSON ORGANISATION PUBLIC LIMITED COMPANY(THE) - 1989-04-01
    Eni House, 10 Ebury Bridge Road, London
    Dissolved Corporate (39 parents)
    Officer
    2001-11-09 ~ 2002-07-19
    IIF 25 - Secretary → ME
  • 34
    ENI UHL LIMITED - now
    LASMO (UHL) LIMITED
    - 2003-04-10 00916179
    ULTRAMAR HOLDINGS LIMITED - 1993-11-18
    GLENWORTH SHIPPING LIMITED - 1979-12-31
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (45 parents)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 36 - Secretary → ME
  • 35
    ENI ULT LIMITED - now
    ENI ULT PLC - 2003-06-13
    LASMO (ULT) PLC
    - 2003-04-10 00301317
    ULTRAMAR PUBLIC LIMITED COMPANY - 1994-06-20
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (47 parents, 3 offsprings)
    Officer
    1999-04-30 ~ 2002-07-19
    IIF 35 - Secretary → ME
  • 36
    ENI ULX LIMITED - now
    LASMO (ULX) LIMITED
    - 2003-04-10 00936223
    ULTRAMAR EXPLORATION LIMITED - 1992-07-15
    Eni House, 10 Ebury Bridge Road, London
    Active Corporate (58 parents, 3 offsprings)
    Officer
    2002-01-11 ~ 2002-07-19
    IIF 41 - Secretary → ME
  • 37
    ENI VENTURES PLC - now
    AGIP VENTURES PLC
    - 2003-04-25 03939723
    WORLDLEADER PUBLIC LIMITED COMPANY - 2000-03-15
    Ebury Bridge House, 10 Ebury Bridge Road, London
    Dissolved Corporate (24 parents)
    Officer
    2002-03-22 ~ 2002-08-08
    IIF 21 - Secretary → ME
  • 38
    IGAS EXPLORATION UK LIMITED - now
    NEXEN EXPLORATION U.K. LIMITED
    - 2011-03-11 04323945
    ENCANA EXPLORATION (U.K.) LIMITED
    - 2004-12-02 04323945
    GLENN EXPLORATION LIMITED - 2001-12-24
    Interpark House, 7 Down Street, London
    Dissolved Corporate (28 parents)
    Officer
    2005-03-09 ~ 2011-01-20
    IIF 46 - Director → ME
    2002-08-06 ~ 2007-05-15
    IIF 39 - Secretary → ME
  • 39
    LASMO GRAND MAGHREB LIMITED
    - now 02466698
    LASMO (MAGHREB) LIMITED - 1990-10-03
    LASMO SHELF NO.6 LIMITED - 1990-07-18
    Eni House, 10 Ebury Bridge Road, London
    Dissolved Corporate (30 parents)
    Officer
    2001-12-17 ~ 2002-07-19
    IIF 6 - Director → ME
    2001-12-17 ~ 2002-07-19
    IIF 22 - Secretary → ME
  • 40
    NEXEN ENERGY MARKETING EUROPE LIMITED
    - now 05566335
    NEXEN EUROPEAN ENERGY MARKETING LIMITED - 2005-10-03
    150 Aldersgate Street, London
    Dissolved Corporate (28 parents)
    Officer
    2006-05-08 ~ 2011-02-28
    IIF 50 - Director → ME
  • 41
    NEXEN PETROLEUM U.K. HOLDINGS LIMITED
    - now 05259891
    ABBEYCORP LIMITED - 2004-11-26
    Deloitte Llp, 1 New Street Square, London
    Liquidation Corporate (38 parents)
    Officer
    2006-09-26 ~ 2012-03-27
    IIF 45 - Director → ME
  • 42
    PRIME GLOBAL ENERGIES LIMITED - now
    PRIME PAKISTAN LIMITED - 2024-12-24
    ENI PAKISTAN LIMITED - 2022-12-30
    LASMO OIL PAKISTAN LIMITED
    - 2003-04-10 00151940
    SCOTTISH CANADIAN OIL & TRANSPORTATION COMPANY LIMITED - 1987-04-03
    WILLIAM REAY & COMPANY LIMITED - 1981-01-02
    5th Floor Halo, Counterslip, Bristol, United Kingdom
    Active Corporate (61 parents)
    Officer
    2001-12-11 ~ 2002-07-19
    IIF 54 - Secretary → ME

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Contains public sector information retrieved at 22 April 2026 and licensed under the Open Government Licence v3.0.