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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.

Parent entities and officers
Inapplicable
parent relation
Individuals in focus

O'regan, William Simon

    Related profiles found in government register
  • O'regan, William Simon
    British born in March 1959

    Registered addresses and corresponding companies
    • 19 Flask Walk, Hampstead, London, NW3 1HH

      IIF 1 IIF 2
  • O'regan, William Simon
    British actuary born in March 1959

    Registered addresses and corresponding companies
  • O'regan, William Simon
    British born in March 1959

    Resident in England

    Registered addresses and corresponding companies
    • 1, Tower Place West, Tower Place, London, EC3R 5BU

      IIF 11
    • 125 London Wall, 8th Floor, London, EC2Y 5AS

      IIF 12
    • 7th Floor, 30 Panton Street, London, SW1Y 4AJ, England

      IIF 13 IIF 14
  • O'regan, William Simon
    British actuary born in March 1959

    Resident in England

    Registered addresses and corresponding companies
    • 1, Tower Place West, Tower Place, London, EC3R 5BU

      IIF 15
    • Flat 5, 66 Maresfield Gardens, Hampstead, London, NW3 5TD

      IIF 16 IIF 17 IIF 18
  • O'regan, William Simon
    British company director born in March 1959

    Resident in England

    Registered addresses and corresponding companies
    • 1 Tower Place West, Tower Place, London, EC3R 5BU

      IIF 19
  • O'regan, William Simon
    British president - north america region born in March 1959

    Resident in England

    Registered addresses and corresponding companies
    • 1, Tower Place West, Tower Place, London, EC3R 5BU, United Kingdom

      IIF 20
  • O'regan, William Simon

    Registered addresses and corresponding companies
    • 19 Temple House, 6 Temple Avenue, London, EC4Y 0DF, United Kingdom

      IIF 21
  • O'regan, William Simon
    British born in March 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 19 Temple House, 6 Temple Avenue, London, EC4Y 0DF, United Kingdom

      IIF 22
  • O'regan, William Simon
    British actuary born in March 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 1 Tower Place West, Tower Place, London, EC3R 5BU

      IIF 23
child relation
Offspring entities and appointments
Active 4
  • 1
    IMPAX GROUP PLC - 2009-10-22
    KERN RIVER PLC - 2001-06-18
    7th Floor 30 Panton Street, London, England
    Active Corporate (8 parents, 8 offsprings)
    Officer
    2020-12-08 ~ now
    IIF 14 - Director → ME
  • 2
    IMPAX CAPITAL ASSET MANAGEMENT LIMITED - 2001-08-01
    SINORD 112 LIMITED - 1998-09-03
    7th Floor 30 Panton Street, London, England
    Active Corporate (5 parents, 12 offsprings)
    Officer
    2024-03-05 ~ now
    IIF 13 - Director → ME
  • 3
    3rd Floor, Suffolk House George Street, Croydon, Surrey
    Active Corporate (5 parents)
    Officer
    2023-03-22 ~ now
    IIF 22 - Director → ME
    2025-02-06 ~ now
    IIF 21 - Secretary → ME
  • 4
    13th Floor 1 Harbour Exchange Square, London, England
    Active Corporate (11 parents, 2 offsprings)
    Officer
    2024-11-28 ~ now
    IIF 12 - Director → ME
Ceased 15
  • 1
    1 Tower Place West, Tower Place, London
    Dissolved Corporate (3 parents)
    Officer
    2004-11-16 ~ 2009-02-02
    IIF 7 - Director → ME
  • 2
    MARSH MERCER HOLDINGS LIMITED - 2000-01-07
    J&H MARSH & MCLENNAN (HOLDINGS) LTD. - 1999-05-06
    THE BOWRING GROUP LIMITED - 1997-10-01
    BOWRING HOLDINGS LIMITED - 1995-10-13
    TRUSHELFCO (N0.2095) LIMITED - 1995-08-03
    1 Tower Place West, Tower Place, London
    Active Corporate (7 parents, 3 offsprings)
    Officer
    2004-12-20 ~ 2015-08-18
    IIF 17 - Director → ME
  • 3
    1 Tower Place West, Tower Place, London
    Active Corporate (3 parents)
    Officer
    2014-06-19 ~ 2022-08-31
    IIF 20 - Director → ME
  • 4
    MERCER UK LIMITED - 2010-03-31
    WILLIAM M. MERCER FRASER LIMITED - 2005-06-29
    WILLIAM M. MERCER LIMITED - 1993-03-01
    WILLIAM M. MERCER LIMITED - 1993-02-12
    MPA (CHICHESTER) LIMITED - 1992-11-16
    M.P.A.LIMITED(THE) - 1983-05-16
    1 Tower Place West, Tower Place, London
    Active Corporate (5 parents)
    Officer
    2004-12-31 ~ 2009-01-20
    IIF 8 - Director → ME
  • 5
    MERCER HUMAN RESOURCE CONSULTING (EB) LIMITED - 2007-09-12
    MARSH EMPLOYEE BENEFIT SERVICES LIMITED - 2005-09-01
    MARSH FINANCIAL SERVICES LIMITED - 2003-03-31
    J&H MARSH & MCLENNAN FINANCIAL SERVICES LIMITED - 1999-07-01
    BOWRING FINANCIAL SERVICES LIMITED - 1997-10-01
    BOWRING & LAYBORN LIMITED - 1989-01-01
    C.T.BOWRING & LAYBORN LIMITED - 1982-01-04
    C/o Bdo Llp 5 Temple Street, Temple Street, Liverpool
    Liquidation Corporate (3 parents)
    Officer
    2005-10-21 ~ 2008-03-01
    IIF 1 - Director → ME
    2011-10-05 ~ 2014-08-06
    IIF 11 - Director → ME
  • 6
    MERCER HUMAN RESOURCE CONSULTING LIMITED - 2007-09-12
    WILLIAM M. MERCER LIMITED - 2002-04-05
    WILLIAM M. MERCER FRASER LIMITED - 1993-03-01
    WILLIAM M. MERCER FRASER LIMITED - 1993-02-12
    WILLIAM M. MERCER - MPA (U.K.) LIMITED - 1986-05-01
    WILLIAM M.MERCER - BOWRING LIMITED - 1984-11-01
    WILLIAM M. MERCER LIMITED - 1984-01-01
    WILLIAM M. MERCER BENEFITS LIMITED - 1983-02-16
    WILLIAM M MERCER-BOWRING LIMITED - 1976-12-31
    1 Tower Place West, Tower Place, London
    Active Corporate (8 parents, 17 offsprings)
    Officer
    2004-10-15 ~ 2007-12-31
    IIF 9 - Director → ME
    2011-10-05 ~ 2014-08-06
    IIF 15 - Director → ME
    2017-07-04 ~ 2020-11-01
    IIF 19 - Director → ME
  • 7
    MARSH INTERNATIONAL LIMITED - 2007-12-17
    REMOVESTAND LIMITED - 1999-04-30
    1 Tower Place West, Tower Place, London
    Active Corporate (5 parents, 1 offspring)
    Officer
    2007-12-17 ~ 2015-09-01
    IIF 18 - Director → ME
  • 8
    MARSH UK GROUP LIMITED - 2007-12-17
    AREACLEAR LIMITED - 1999-04-19
    1 Tower Place West, Tower Place, London
    Active Corporate (5 parents, 28 offsprings)
    Officer
    2007-12-17 ~ 2015-09-01
    IIF 16 - Director → ME
  • 9
    1 Tower Place West, Tower Place, London
    Dissolved Corporate (3 parents)
    Officer
    2005-08-25 ~ 2009-01-20
    IIF 3 - Director → ME
  • 10
    WILLIAM M. MERCER FRASER PENSION FUND TRUSTEES LIMITED - 2000-05-17
    BOWRING TRUSTEES LIMITED - 1987-11-16
    C. T. BOWRING (TRUSTEES) LIMITED - 1982-01-04
    BOWLAY TRUSTEES (EMPLOYEE BENEFITS) LIMITED - 1974-01-22
    MUIR BEDDALL (PENSIONS) LIMITED - 1973-10-03
    40-b, Tower 42 25 Old Broad Street, London, United Kingdom
    Active Corporate (4 parents)
    Equity (Company account)
    76,979 GBP2023-12-31
    Officer
    2012-09-14 ~ 2013-01-08
    IIF 23 - Director → ME
  • 11
    SSB SERVICES LIMITED - 1993-12-22
    S.S.B. INSURANCE SERVICES LIMITED - 1988-05-31
    SEDGWICK BETA LIMITED - 1988-04-28
    SEDGWICK RISK MANAGEMENT SERVICES LIMITED - 1985-03-15
    BLAND PAYNE REINSURANCE BROKERS (AVIATION) LIMITED - 1985-02-21
    1 Tower Place West, Tower Place, London
    Active Corporate (3 parents)
    Officer
    2004-12-31 ~ 2009-01-20
    IIF 5 - Director → ME
  • 12
    SEDGWICK KAPPA LIMITED - 1993-12-22
    SEDGWICK PERSONAL FINANCIAL MANAGEMENT LIMITED - 1991-01-17
    SEDGWICK FORBES PERSONAL FINANCE MANAGEMENT LIMITED - 1980-12-31
    SEDGWICK FORBES BLAND PAYNE PERSONAL FINANCIAL MANAGEMENT LIMITED - 1980-12-31
    SEDGWICK FORBES PERSONAL FINANCE MANAGEMENT LIMITED - 1979-12-31
    Devonshire House, 60 Goswell Road, London
    Dissolved Corporate (3 parents)
    Officer
    2004-11-16 ~ 2009-01-20
    IIF 6 - Director → ME
  • 13
    NOBLE LOWNDES & PARTNERS LIMITED - 1993-12-31
    1 Tower Place West, Tower Place, London
    Active Corporate (3 parents, 1 offspring)
    Officer
    2004-11-16 ~ 2009-01-20
    IIF 4 - Director → ME
  • 14
    SEDGWICK EMPLOYEE BENEFITS CONSULTANTS LIMITED - 1988-10-18
    SEDGWICK FORBES BLAND PAYNE EMPLOYEE BENEFITS CONSULTANTS LIMITED - 1980-12-31
    SEDGWICK FORBES EMPLOYEE BENEFITS CONSULTANTS LIMITED - 1979-12-31
    1 Tower Place West, Tower Place, London
    Dissolved Corporate (3 parents)
    Officer
    2004-11-16 ~ 2009-02-02
    IIF 10 - Director → ME
  • 15
    C/o Bdo Llp 5 Temple Square, Temple Street, Liverpool
    Dissolved Corporate (3 parents)
    Officer
    2004-11-16 ~ 2009-02-02
    IIF 2 - Director → ME

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.