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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

Calver, Brian

    Related profiles found in government register
  • Calver, Brian
    British managing director born in June 1943

    Registered addresses and corresponding companies
    • 4 Park Lane, Old Basing, Basingstoke, Hampshire, RG24 7HE

      IIF 1
  • Calver, Brian
    British mining engineer born in June 1943

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments 7
  • 1
    CORNISH CHAMBER OF MINES AND MINERALS - now
    CORNISH CHAMBER OF MINES
    - 2001-05-11 00147391
    Old Mine Offices, Wheal Jane Baldhu, Truro, Cornwall
    Active Corporate (19 parents)
    Officer
    ~ 1992-12-31
    IIF 1 - Director → ME
  • 2
    HARWORTH ESTATES LIMITED - now
    PROSPECT HOUSE PROPERTIES LIMITED
    - 2012-12-10 02173536
    STRANDSHIRES LIMITED - 1987-11-25
    Advantage House Poplar Way, Catcliffe, Rotherham, United Kingdom
    Active Corporate (26 parents, 21 offsprings)
    Officer
    1992-08-10 ~ 1993-12-15
    IIF 2 - Director → ME
  • 3
    HARWORTH ESTATES NO 2 LIMITED - now
    R & A YOUNG MINING LIMITED
    - 2013-01-25 01827325
    OPTION MANAGEMENT LIMITED - 1986-02-14
    Advantage House Poplar Way, Catcliffe, Rotherham, United Kingdom
    Active Corporate (29 parents)
    Officer
    1992-08-10 ~ 1993-12-15
    IIF 7 - Director → ME
  • 4
    HARWORTH HAULAGE LTD - now
    RJB HAULAGE LIMITED - 2001-05-22
    R & A YOUNG HAULAGE LIMITED
    - 1994-01-18 01824798
    HERALD HAULAGE LIMITED - 1986-02-14
    Central Square, 29 Wellington Street, Leeds
    Dissolved Corporate (20 parents)
    Officer
    1992-08-10 ~ 1993-12-15
    IIF 5 - Director → ME
  • 5
    IVESTON MINING COMPANY LIMITED
    - now 01980519
    TRENHALL PROPERTIES LIMITED - 1986-02-18
    Eversheds Sun Alliance House, 35 Mosley Street, Newcastle Upon Tyne, Tyne And Wear
    Dissolved Corporate (6 parents)
    Officer
    1992-08-10 ~ dissolved
    IIF 6 - Director → ME
  • 6
    PARKLANDS COLLIERY COMPANY LIMITED
    00798370
    Central Square, 29 Wellington Street, Leeds
    Dissolved Corporate (18 parents)
    Officer
    1992-08-10 ~ 1993-12-15
    IIF 4 - Director → ME
  • 7
    RJB MINING (UK) LTD - now
    ALTHORPE COAL LIMITED
    - 2001-06-27 02200408
    COOLBROAD LIMITED - 1988-03-25
    Central Square 29 Wellington Street, Leeds
    Dissolved Corporate (18 parents)
    Officer
    1992-08-10 ~ 1993-12-15
    IIF 3 - Director → ME

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