Company
RSK Investments Limited
Official record Companies House · updated 20th September 2026 · Sources
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Who leads it
Previous officers 2
- Susan Sljivic 2002-2020 View profile
- Dr Sheila Caroline Ryder 2002-2003 View profile
Directors and secretaries as filed at Companies House.
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About
- Incorporated
- 01/08/2002
Ownership
Owned by (2) 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.
- Alasdair Alan Ryder ceased 2021-03-30
50-75% shares, 50-75% voting · notified 2016-04-06 - RSK Environment Limited
75-100% shares, 75-100% voting, appoints directors · notified 2021-03-30
Group
- RSK Investments Limited
is controlled by Alasdair Alan Ryder
Evidence
ceased 50-75% shares, 50-75% voting · notified 2016-04-06, ceased 2021-03-30 · source: Companies House PSC register
Ultimately controlled by Alasdair Alan Ryder.
108 other companies in this group
- RSK Stats Geoconsult Limited
- Topham Investco Limited
- ARA Architecture Limited
- Proeon Holdings Limited
- RSK Remediation Limited
- PA Group (UK) Limited
- Axis Well Technology International Limited
- RSK Project Services Limited
- Travis Baker Limited
- MWH Constructors Limited
- RSK Carbon Management Limited
- Absolute Solar and Wind LTD
- Axis Well Technology Group Limited
- R.W. Management (Holdings) LTD
- RSK Investments (Newcastle) LLP
- IAN Farmer Associates (1998) Limited
- 06126847
- MWH Farrer Limited
- 3BM Limited
- WE ARE Brandnew LTD
- Pegasys Limited
- Cognica Limited
- ECD Architects LTD
- RSK Radiological Limited
- Envirolab Limited
- RSK HI-Line Limited
- Water Research Limited
- 07143956
- 11493916
- Technical Editing Services Limited
- Alan Ryder Investments Limited
- JB Site Investigations Limited
- R.J.T. Excavations Limited
- Hawkins Electrical Holdings Limited
- WRC Aqua Limited
- Axis Well Technology Limited
- MWH Limited
- Kendall Kingscott Limited
- RSK RAW Limited
- Advantage RSK Limited
- RSK Integrated Waste Solutions Limited
- Headland Archaeology (UK) Limited
- Reigate Asset Leasing LTD.
- Binnies UK Limited
- N-Able Property Services LTD
- Axis Well Technology Management Limited
- Building Sciences Limited
- Argus Environmental Limited
- WRC Evaluation and Testing Centre Limited
- Keegans Limited
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 for researchers
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
- Dr Mary-Ann Elizabeth Smyth Director · appointed 2002
- Ian Harry Strudwick Director · appointed 2002
- Michael William Mason Director · appointed 2002
Directors past 6 years
- Dr Mary-Ann Elizabeth Smyth Director · appointed 2002
- Ian Harry Strudwick Director · appointed 2002
- Michael William Mason Director · appointed 2002
First-time vs portfolio directors
Portfolio (3)
- Dr Mary-Ann Elizabeth Smyth Director · appointed 2002
- Ian Harry Strudwick Director · appointed 2002
- Michael William Mason Director · appointed 2002
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
- 04500781
- Status
- Active
- Type
- Private Limited Company
- Edition
- Register edition compiled 20th September 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
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