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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.

Parent entities and officers 22
  • 1
    Gillespie, Andrew James
    Born in May 1969
    Individual (150 offsprings)
    Officer
    2011-08-04 ~ now
    OF - Director → CIF 0
  • 2
    Downe, Philip Charles George
    Engineer born in March 1949
    Individual (4 offsprings)
    Officer
    2001-11-05 ~ 2004-03-31
    OF - Director → CIF 0
  • 3
    Purvis, John George
    Chartered Engineer born in October 1947
    Individual (26 offsprings)
    Officer
    2001-11-05 ~ 2007-09-17
    OF - Director → CIF 0
  • 4
    Whitworth, Benjamin Warwick
    Solicitor born in August 1965
    Individual (98 offsprings)
    Officer
    2012-05-18 ~ 2019-10-31
    OF - Director → CIF 0
    Whitworth, Benjamin Warwick
    Individual (98 offsprings)
    Officer
    2012-08-29 ~ 2019-10-31
    OF - Secretary → CIF 0
  • 5
    Birthistle, Peter
    Director born in August 1968
    Individual (3 offsprings)
    Officer
    2008-07-01 ~ 2010-09-30
    OF - Director → CIF 0
  • 6
    Ryan, John
    Director born in July 1962
    Individual (1 offspring)
    Officer
    2008-07-01 ~ 2009-06-19
    OF - Director → CIF 0
  • 7
    Moore, Raymond James
    Director born in September 1962
    Individual (3 offsprings)
    Officer
    2008-07-01 ~ 2010-11-15
    OF - Director → CIF 0
  • 8
    Oliver, Graham Dudley
    Director born in May 1961
    Individual (32 offsprings)
    Officer
    2009-08-03 ~ 2012-08-28
    OF - Director → CIF 0
  • 9
    Hamer, Paul Christopher
    Director born in March 1969
    Individual (27 offsprings)
    Officer
    2008-07-01 ~ 2010-12-13
    OF - Director → CIF 0
  • 10
    Boyd, John Michael
    Director born in December 1971
    Individual (2 offsprings)
    Officer
    2001-03-31 ~ 2001-11-05
    OF - Director → CIF 0
  • 11
    Farbridge, Caroline Louise
    Individual (30 offsprings)
    Officer
    2008-11-05 ~ 2010-10-15
    OF - Secretary → CIF 0
  • 12
    White, Claire Christina
    Company Director born in March 1967
    Individual (19 offsprings)
    Officer
    2010-10-15 ~ 2011-08-04
    OF - Director → CIF 0
  • 13
    Hartley, Robert
    Chartered Accountants born in March 1958
    Individual (45 offsprings)
    Officer
    2001-11-05 ~ 2009-04-14
    OF - Director → CIF 0
    Hartley, Robert
    Individual (45 offsprings)
    Officer
    1988-09-30 ~ 2006-07-01
    OF - Secretary → CIF 0
  • 14
    Brayson, William Richard
    Chartered Accountant born in May 1946
    Individual (12 offsprings)
    Officer
    2001-11-05 ~ 2004-01-02
    OF - Director → CIF 0
  • 15
    Nolan, Robert
    Director born in September 1969
    Individual (1 offspring)
    Officer
    2008-07-01 ~ 2010-12-14
    OF - Director → CIF 0
  • 16
    Biggerstaff, William Angus
    Company Director born in July 1944
    Individual (5 offsprings)
    Officer
    2010-12-01 ~ 2012-03-31
    OF - Director → CIF 0
  • 17
    Wilton, David Charles
    Director born in October 1962
    Individual (78 offsprings)
    Officer
    2009-02-10 ~ 2010-12-13
    OF - Director → CIF 0
  • 18
    Cullen, Kevin T
    Geologist born in September 1949
    Individual (1 offspring)
    Officer
    1988-09-30 ~ 2001-11-05
    OF - Director → CIF 0
  • 19
    Bennett, John Raymond Peter
    Geologist born in January 1943
    Individual (1 offspring)
    Officer
    1988-09-30 ~ 2001-11-05
    OF - Director → CIF 0
  • 20
    Hasson, David Lawrence
    Individual (3 offsprings)
    Officer
    2010-11-25 ~ 2012-08-29
    OF - Secretary → CIF 0
  • 21
    Connery, Denis Patrick
    Individual (35 offsprings)
    Officer
    2006-07-01 ~ 2008-11-05
    OF - Secretary → CIF 0
  • 22
    TETRA TECH MANAGEMENT SERVICES LIMITED
    - now 04807864
    WYG MANAGEMENT SERVICES LIMITED - 2020-12-16 04807864
    TWEEDS LIMITED - 2007-08-28
    3, Sovereign Square, Sovereign Street, Leeds, England
    Active Corporate (24 parents, 2 offsprings)
    Person with significant control
    2016-04-06 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
parent relation
Company in focus

TETRA TECH MANAGEMENT SERVICES (NORTHERN IRELAND) LIMITED

Period: 2021-01-27 ~ now
Company number: NI021970
Registered names
TETRA TECH MANAGEMENT SERVICES (NORTHERN IRELAND) LIMITED - now
Standard Industrial Classification
71129 - Other Engineering Activities

  • TETRA TECH MANAGEMENT SERVICES (NORTHERN IRELAND) LIMITED
    Info
    WYG MANAGEMENT SERVICES (NORTHERN IRELAND) LIMITED - 2021-01-27
    WYG NOLAN RYAN TWEEDS (NORTHERN IRELAND) LIMITED - 2021-01-27
    WYG NOLAN RYAN (NORTHERN IRELAND) LIMITED - 2021-01-27
    HYDROGEOLOGICAL AND ENVIRONMENTAL SERVICES LIMITED - 2021-01-27
    Registered number NI021970
    1 Locksley Business Park, Montgomery Road, Belfast BT6 9UP
    PRIVATE LIMITED COMPANY incorporated on 1988-09-30 (37 years 5 months). The company status is Active.
    The last date of confirmation statement was made at 2026-02-20
    CIF 0
child relation
Offspring entities and appointments 0
  • Not found in our database.

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