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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company 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: Company in focus, Offsprings
Parent entities and officers 40
  • 1
    Duckworth, Brian
    Director born in May 1949
    Individual (24 offsprings)
    Officer
    2005-04-01 ~ 2009-08-03
    OF - Director → CIF 0
  • 2
    Brownlie, Bill
    Director born in July 1953
    Individual (2 offsprings)
    Officer
    2020-01-16 ~ 2025-04-22
    OF - Director → CIF 0
  • 3
    Barr, Robert George Anthony
    Director born in May 1956
    Individual (24 offsprings)
    Officer
    2007-01-01 ~ 2015-09-24
    OF - Director → CIF 0
  • 4
    Wood, Peter Scott
    Director born in May 1947
    Individual (38 offsprings)
    Officer
    2004-03-01 ~ 2009-03-31
    OF - Director → CIF 0
  • 5
    Cooper, William Gareth
    Company Director born in August 1943
    Individual (28 offsprings)
    Officer
    1993-10-01 ~ 2004-10-10
    OF - Director → CIF 0
  • 6
    Jeffcoat, David John
    Director born in May 1950
    Individual (17 offsprings)
    Officer
    2009-12-16 ~ 2018-09-25
    OF - Director → CIF 0
  • 7
    Purvis, John George
    Chartered Engineer born in October 1947
    Individual (26 offsprings)
    Officer
    1997-07-21 ~ 2007-09-17
    OF - Director → CIF 0
  • 8
    Mccaffrey, Richard George, Mr.
    Director born in July 1951
    Individual (10 offsprings)
    Officer
    2005-07-01 ~ 2008-01-24
    OF - Director → CIF 0
  • 9
    Mctighe, Robert Michael
    Director born in October 1953
    Individual (41 offsprings)
    Officer
    2009-08-03 ~ 2017-09-21
    OF - Director → CIF 0
  • 10
    Clarkson, Iain Geoffrey
    Chartered Accountant born in March 1967
    Individual (42 offsprings)
    Officer
    2016-06-07 ~ 2019-02-25
    OF - Director → CIF 0
  • 11
    Connery, Denis Patrick
    Company Director born in March 1957
    Individual (35 offsprings)
    Officer
    2003-11-03 ~ 2008-11-05
    OF - Director → CIF 0
    Connery, Denis Patrick
    Director
    Individual (35 offsprings)
    Officer
    2006-07-01 ~ 2008-11-05
    OF - Secretary → CIF 0
  • 12
    Hamer, Paul Christopher
    Director born in March 1969
    Individual (27 offsprings)
    Officer
    2008-07-01 ~ 2017-06-09
    OF - Director → CIF 0
  • 13
    Cummins, Sean Vincent
    Director born in October 1962
    Individual (80 offsprings)
    Officer
    2011-12-02 ~ 2016-06-07
    OF - Director → CIF 0
  • 14
    Simmons, Peter Francis
    Consulting Engineer born in March 1939
    Individual (3 offsprings)
    Officer
    ~ 1992-04-30
    OF - Director → CIF 0
  • 15
    Amidon, Derek Gordon
    President born in May 1967
    Individual (2 offsprings)
    Officer
    2019-07-09 ~ 2023-05-12
    OF - Director → CIF 0
  • 16
    Whitworth, Benjamin Warwick
    Individual (98 offsprings)
    Officer
    2011-05-03 ~ 2019-10-31
    OF - Secretary → CIF 0
  • 17
    Rivett, John Martin
    Consulting Engineer born in December 1947
    Individual (6 offsprings)
    Officer
    ~ 1999-02-01
    OF - Director → CIF 0
  • 18
    Olver, Graham Dudley
    Director born in May 1961
    Individual (32 offsprings)
    Officer
    2009-08-03 ~ 2015-08-31
    OF - Director → CIF 0
    Olver, Graham Dudley
    Director
    Individual (32 offsprings)
    Officer
    2009-08-03 ~ 2011-05-03
    OF - Secretary → CIF 0
  • 19
    Wilton, David Charles
    Director born in October 1962
    Individual (78 offsprings)
    Officer
    2009-02-10 ~ 2011-12-02
    OF - Director → CIF 0
    Wilton, David Charles
    Director
    Individual (78 offsprings)
    Officer
    2009-04-14 ~ 2009-08-03
    OF - Secretary → CIF 0
  • 20
    Legg, David Noel
    Director born in December 1936
    Individual (12 offsprings)
    Officer
    ~ 1997-04-01
    OF - Director → CIF 0
  • 21
    Richardson, John Desmond
    Business Development Consultan born in July 1947
    Individual (2 offsprings)
    Officer
    1997-07-21 ~ 2010-01-31
    OF - Director → CIF 0
  • 22
    Murdoch, Andrew
    Individual (64 offsprings)
    Officer
    2023-10-11 ~ now
    OF - Secretary → CIF 0
  • 23
    Marini, Marcia Maria
    Non-Executive Director born in July 1967
    Individual (9 offsprings)
    Officer
    2018-01-01 ~ 2019-07-09
    OF - Director → CIF 0
  • 24
    Dean, Michael John
    Consulting Engineer born in March 1947
    Individual (4 offsprings)
    Officer
    ~ 1997-07-21
    OF - Director → CIF 0
  • 25
    Douglas, Ian Ronald
    Consulting Engineer born in May 1939
    Individual (2 offsprings)
    Officer
    ~ 1997-07-21
    OF - Director → CIF 0
  • 26
    Hopson, Preston
    Individual (77 offsprings)
    Officer
    2020-01-07 ~ 2023-10-11
    OF - Secretary → CIF 0
  • 27
    Gillespie, Andrew James
    Born in May 1969
    Individual (150 offsprings)
    Officer
    2020-01-16 ~ now
    OF - Director → CIF 0
  • 28
    Hatch, David Craig
    Born in December 1964
    Individual (9 offsprings)
    Officer
    2025-04-22 ~ now
    OF - Director → CIF 0
  • 29
    Rider, Brian Leonard
    Consulting Engineer born in October 1930
    Individual (2 offsprings)
    Officer
    ~ 1995-08-31
    OF - Director → CIF 0
  • 30
    Lemmon, Richard Alan
    Born in August 1959
    Individual (60 offsprings)
    Officer
    2019-07-09 ~ now
    OF - Director → CIF 0
  • 31
    Brayson, William Richard
    Chartered Accountant born in May 1946
    Individual (12 offsprings)
    Officer
    1997-07-21 ~ 2003-12-17
    OF - Director → CIF 0
  • 32
    Moxon, Michael Colin
    Company Director born in December 1941
    Individual (6 offsprings)
    Officer
    ~ 1998-09-30
    OF - Director → CIF 0
  • 33
    Haynes, Lawrence John
    Director born in December 1952
    Individual (33 offsprings)
    Officer
    2007-06-18 ~ 2009-01-05
    OF - Director → CIF 0
  • 34
    Hartley, Robert
    Chartered Accountant born in March 1958
    Individual (45 offsprings)
    Officer
    1999-05-04 ~ 2009-04-14
    OF - Director → CIF 0
    Hartley, Robert
    Chartered Accountant
    Individual (45 offsprings)
    Officer
    1999-05-04 ~ 2006-07-01
    OF - Secretary → CIF 0
    2008-11-05 ~ 2009-04-14
    OF - Secretary → CIF 0
  • 35
    Masom, Neil Andrew
    Director born in March 1959
    Individual (14 offsprings)
    Officer
    2015-10-01 ~ 2019-07-09
    OF - Director → CIF 0
  • 36
    Beeton, Jeremy John, Dr
    Director born in March 1953
    Individual (40 offsprings)
    Officer
    2015-10-01 ~ 2019-07-09
    OF - Director → CIF 0
  • 37
    Mccormick, Douglas Alexander Drysdale
    Chief Executive Officer born in January 1962
    Individual (27 offsprings)
    Officer
    2017-06-12 ~ 2020-01-16
    OF - Director → CIF 0
  • 38
    Hagues, Ian James
    Individual (12 offsprings)
    Officer
    ~ 1999-05-04
    OF - Secretary → CIF 0
  • 39
    Chadwick, John Henry
    Consulting Engineer born in October 1942
    Individual (7 offsprings)
    Officer
    ~ 1994-06-30
    OF - Director → CIF 0
  • 40
    TETRA TECH UK HOLDINGS LIMITED
    - now 05909611
    COFFEY UK LIMITED - 2019-05-08
    1, Northfield Road, Reading, Berkshire, England
    Active Corporate (23 parents, 10 offsprings)
    Person with significant control
    2019-07-09 ~ now
    PE - Ownership of shares – 75% or more → CIF 0
    PE - Right to appoint or remove directors → CIF 0
    PE - Ownership of voting rights - 75% or more → CIF 0
parent relation
Company in focus

TETRA TECH UK CONSULTING GROUP LIMITED

Period: 2020-12-17 ~ now
Company number: 01869543
Registered names
TETRA TECH UK CONSULTING GROUP LIMITED - now
Standard Industrial Classification
70100 - Activities Of Head Offices
70229 - Management Consultancy Activities Other Than Financial Management
71129 - Other Engineering Activities
71112 - Urban Planning And Landscape Architectural Activities
Related profiles found in government register
  • TETRA TECH UK CONSULTING GROUP LIMITED
    Info
    TETRA TECH UK GROUP CONSULTING LIMITED - 2020-12-17
    WYG LIMITED - 2020-12-17
    WYG PLC - 2020-12-17
    WHITE YOUNG GREEN PLC - 2020-12-17
    ERNEST GREEN AND PARTNERS HOLDINGS PLC - 2020-12-17
    Registered number 01869543
    3 Sovereign Square, Sovereign Street, Leeds LS1 4ER
    PRIVATE LIMITED COMPANY incorporated on 1984-12-06 (41 years 3 months). The company status is Active.
    The last date of confirmation statement was made at 2025-05-11
    CIF 0
  • TETRA TECH UK CONSULTING GROUP LIMITED
    S
    Registered number 01869543
    3, Sovereign Square, Sovereign Street, Leeds, England, LS1 4ER
    Private Limited Company in Companies House, England
    CIF 1 CIF 2
    Private Limited Company in Companies House, United Kingdom
    CIF 3
(more)
child relation
Offspring entities and appointments 7
  • 1
    ERNEST GREEN PARTNERSHIP LIMITED
    01871269
    Arndale Court, Otley Road, Leeds, West Yorkshire
    Dissolved Corporate (26 parents)
    Person with significant control
    2016-04-06 ~ dissolved
    CIF 7 - Ownership of shares – 75% or more → OE
  • 2
    TETRA TECH EUROPE EXECUTIVE SERVICES LIMITED - now
    WYG ADVISORY LIMITED
    - 2025-07-07 10705397
    101 Park Drive, Milton Park, Abingdon, Oxfordshire, England
    Active Corporate (7 parents)
    Person with significant control
    2017-04-03 ~ 2025-07-03
    CIF 5 - Ownership of shares – 75% or more → OE
    CIF 5 - Right to appoint or remove directors → OE
    CIF 5 - Ownership of voting rights - 75% or more → OE
  • 3
    TETRA TECH GROUP LIMITED
    - now 06595608
    WYG GROUP LIMITED
    - 2020-12-16 06595608
    3 Sovereign Square, Sovereign Street, Leeds, England
    Active Corporate (21 parents, 4 offsprings)
    Person with significant control
    2016-04-06 ~ now
    CIF 3 - Right to appoint or remove directors → OE
    CIF 3 - Ownership of shares – 75% or more → OE
    CIF 3 - Ownership of voting rights - 75% or more → OE
  • 4
    WASTE MANAGEMENT RESEARCH LIMITED
    03239828
    3 Sovereign Square, Sovereign Street, Leeds, England
    Dissolved Corporate (17 parents)
    Person with significant control
    2016-04-06 ~ dissolved
    CIF 1 - Ownership of voting rights - 75% or more → OE
  • 5
    WHITE YOUNG GREEN INTERNATIONAL LIMITED
    - now 03734619
    EVER 1162 LIMITED - 2000-05-02
    3 Sovereign Square, Sovereign Street, Leeds, England
    Active Corporate (14 parents)
    Person with significant control
    2016-04-06 ~ now
    CIF 2 - Ownership of shares – 75% or more → OE
  • 6
    WHITE YOUNG GREEN QUEST TRUSTEE LIMITED
    04387285
    Arndale Centre, Otley Road, Leeds
    Dissolved Corporate (11 parents)
    Person with significant control
    2016-04-06 ~ dissolved
    CIF 6 - Ownership of shares – 75% or more → OE
  • 7
    WYG CONSULTING LIMITED
    10470582
    3 Sovereign Square, Sovereign Street, Leeds, England
    Active Corporate (3 parents)
    Person with significant control
    2016-11-09 ~ now
    CIF 4 - Right to appoint or remove directors → OE
    CIF 4 - Ownership of shares – 75% or more → OE
    CIF 4 - Ownership of voting rights - 75% or more → OE

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