Company · Gerrards Cross
TSL Limited
Engineering design activities for industrial process and production
Official record Companies House · updated 27th September 2026 · Sources
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Who leads it
Previous officers 4
- Graeme Brookes 2021-2024 View profile
- Philip Andrew Magee 2003-2004 View profile
- Helen Bina Cara 2002-2003 View profile
- Peta Elizabeth Ann James 2002-2003 View profile
Directors and secretaries as filed at Companies House.
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About
- What it does
- Engineering design activities for industrial process and production
- Incorporated
- 23/07/2002
- Registered office
- Gerrards Cross
- Previous names
- TSL Projects Limited (until 29/11/2018)
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.
- Tonroe Group Limited
75-100% shares, 75-100% voting · notified 2016-04-06
Group
- TSL Limited
is controlled by Tonroe Group Limited
Evidence
active 75-100% shares, 75-100% voting · notified 2016-04-06 · source: Companies House PSC register - Tonroe Group Limited
is controlled by Michael Aidan Mcdonnell
Evidence
ceased 25-50% shares, 25-50% voting · notified 2016-04-06, ceased 2025-08-11 · source: Companies House PSC register
Ultimately controlled by Michael Aidan Mcdonnell.
33 other companies in this group
- 12424172
- Smartparc Segro Spondon Limited
- Castlemore Homes Haddenham Limited
- Smartparc 5 Limited
- TSL International Group Limited
- Rockland Cement Limited
- Rockland Aggregates Limited
- Haddenham Management Company Limited
- Smartparc 2 Limited
- Caldecote Management Company Limited
- Tonroe Group (Nominees) Limited
- Castlemore Homes Caldecote Limited
- Smartparc 3 Limited
- Monalito LTD
- Smartparc Derby FM Limited
- TSL International Limited
- TSL FM LTD
- Vertifarm Limited
- 05778724
- Barrington Stud LTD
- Microgen Power Systems Limited
- Smartparc Limited
- Straffan Limited
- Castlemore Homes Bucklesham Limited
- Vertipharm Limited
- Sphere Design Limited
- MMD UK Holdings Limited
- Castlemore Homes Group Limited
- Regen Forestry Limited
- 10029787
- Smartparc 4 Limited
- Bucklesham Management Company Limited
- Tonroe Group 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.
Financials
- Net assets
- £56,068,000
- Total assets
- £76,652,000
- Cash
- £69,723,000
- Employees
- 3.72
- Turnover
- Not reported (small or micro-entity accounts)
- Profit/loss
- £18,517,000
Five-year trend
| Period ending | Turnover | Net assets |
|---|---|---|
| 2025-12-31 | Not reported | £56,068,000 |
| 2025-12-31 | Not reported | £56,068,000 |
Figures from accounts filed at Companies House (iXBRL), period ending 2025-12-31. Where turnover is absent, small and micro-entity accounts are not required to report it, so it is not shown as zero.
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.
4 directors on the board
- Elizabeth Porter Director · appointed 2021
- Matthew John Beasley Director · appointed 2024
- Chetan Sharma Director · appointed 2025
- Michael Aidan Mcdonnell Director · appointed 2003
Directors past 6 years
- Michael Aidan Mcdonnell Director · appointed 2003
First-time vs portfolio directors
First-time (1)
- Matthew John Beasley Director · appointed 2024
Portfolio (3)
- Elizabeth Porter Director · appointed 2021
- Chetan Sharma Director · appointed 2025
- Michael Aidan Mcdonnell Director · appointed 2003
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.
Sources
Official record from Companies House. Governance Register calculates the connections.
Record details
- Company number
- 04492402
- Status
- Active
- Type
- Private Limited Company
- Accounts next due
- 30/09/2027
- Edition
- Register edition compiled 27th September 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
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