Company
Tetra Tech Group Limited
Official record Companies House · updated 27th September 2026 · Sources
Network
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Who leads it
Previous officers 16
- Douglas Alexander Drysdale Mccormick 2017-2020 View profile
- Iain Geoffrey Clarkson 2016-2019 View profile
- Sean Vincent Cummins 2011-2016 View profile
- Graham Dudley Olver 2009-2015 View profile
- David Charles Wilton 2009-2011 View profile
- Philip David Collard 2008-2009 View profile
- Elizabeth Lina Zukowski 2008-2011 View profile
- John William Jenkins 2008-2009 View profile
- Paul Christopher Hamer 2008-2017 View profile
- Michael John Procter 2008-2010 View profile
- Lawrence John Haynes 2008-2009 View profile
- Robert Hartley 2008-2009 View profile
- Preston Hopson 2020-2023 View profile
- Benjamin Warwick Whitworth 2011-2019 View profile
- Caroline Louise Farbridge 2008-2010 View profile
- Denis Patrick Connery 2008-2008 View profile
Directors and secretaries as filed at Companies House.
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About
- Incorporated
- 16/05/2008
Ownership
Owned by (1) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.
- Tetra Tech UK Consulting Group Limited
75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06
Group
- Tetra Tech Group Limited
is controlled by Tetra Tech UK Consulting Group Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register - Tetra Tech UK Consulting Group Limited
is controlled by Tetra Tech UK Holdings Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2019-07-09 · source: Companies House PSC register
Ultimately controlled by Tetra Tech UK Holdings Limited.
74 other companies in this group
- RPS Trustees Limited
- ECL Technology Limited
- NI020346
- ECL Resources Management, Limited
- R P S Group Limited
- Energy Innovations Limited
- Coffey Geotechnics Limited
- 06596951
- Tetra Tech RPS Energy Limited
- Emulous Limited
- Tetra Tech Consulting Limited
- Trench Farrow Limited
- Tetra Tech Europe Executive Services Limited
- Nuclear Decommissioning Limited
- Tetra Tech Environment Planning Transport Limited
- RPS Laboratories Limited
- Tetra Tech Environmental and Planning (Northern Ireland) Limited
- Hoare LEA Holdings Limited
- Isochrone Holdings Limited
- RPS Ireland Limited
- Hydrosearch Associates Limited
- Waste Management Research Limited
- Tetra Tech RPS Energy Consultants Limited
- 05111508
- FMW Consultancy LTD
- Signet Planning Limited
- Tetra Tech Consulting (NI) Limited
- Utility Technical Services Limited
- Geocon Group Services Limited
- Tetra Tech Limited
- 07092778
- North Associates (Cumbria) Limited
- Tetra Tech UK Limited
- RPS Group US Holdings Limited
- Geophysical Safety Resources Limited
- Tetra Tech Management Services Limited
- Tetra Tech Environmental Management Limited
- Hoare LEA Europe Limited
- Piteau Associates UK Limited
- Nautilus (Seaa) Limited
- R W Gregory Limited
- Nautilus Limited
- RPS Consultants Limited
- RPS Planning & Development Limited
- Arcadis Tetra Tech 1 Limited
- Tetra Tech International Development Europe Limited
- 06596966
- Basicshare Limited
- RPS Finance AAP Limited
- 10470582
Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.
Board analysis
Board DNA
How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.
3 directors on the board
- Andrew James Gillespie Director · appointed 2019
- David Craig Hatch Director · appointed 2025
- Richard Alan Lemmon Director · appointed 2020
Directors past 6 years
- Andrew James Gillespie Director · appointed 2019
- Richard Alan Lemmon Director · appointed 2020
First-time vs portfolio directors
Portfolio (3)
- Andrew James Gillespie Director · appointed 2019
- David Craig Hatch Director · appointed 2025
- Richard Alan Lemmon Director · appointed 2020
Also govern a charity
Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.
The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.
Gaps to watch
- Several long-serving directors could step down together
Where to look Suggested search: succession planning for long-tenured seats.
Sources
Official record from Companies House. Governance Register calculates the connections.
Record details
- Company number
- 06595608
- Status
- Active
- Type
- Private Limited Company
- Edition
- Register edition compiled 27th September 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
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