Defenster Window Systems Limited
iSource and licenceOfficial record from Companies House. Governance Register calculates the connections.Register edition compiled 8 November 2026.Contains public sector information licensed under the Open Government Licence v3.0.How we handle dataOverview
Defenster Window Systems Limited's network
1 person4 organisationsExplore in 3Di1 listed on the board. 4 organisations share a board member with this company.The large node is Defenster Window Systems Limited. The map shows two steps out from the public record. Hover a node to focus its connections; click one to open it.The board
1 listediDirectors and secretaries as filed at Companies House.| Name | Role | Since |
|---|---|---|
| Michael Joseph O'Neill | Director | 2012 |
Board
Current officers
1iOccupation and nationality are held for only some companies and are not held for this one. Other boards counts directorships that are current in the Companies House officer data; it does not say whether the people are the same without a matching date of birth, and is not proof of any link between the companies.| Name | Role | Appointed | Other boards |
|---|---|---|---|
| Michael Joseph O'Neill | Director | 28 February 2012 | 4 other current boards |
Source: Companies House officer data (appointments and resignations). Contains public sector information licensed under the Open Government Licence v3.0.
Former officers
1 listed, latest first| Name | Role | Appointed | Left |
|---|---|---|---|
| Brian Reid Ltd. | Corporate secretary | 28 February 2012 | 28 February 2012 |
Who is on the board
iCounted from the dated Companies House officer record: the current directors only, past directors excluded.How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.1 directors on the board
- Michael Joseph O'Neill Director · appointed 2012
Directors past 6 years
- Michael Joseph O'Neill Director · appointed 2012
Where else this board sits
The 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
- A single director - no second pair of eyes on any decision
Where to look Suggested search: a second director to remove single-point control.
Network
Network
iThe large node is Defenster Window Systems Limited. Red nodes are organisations, white nodes are people. Dashed links are historical or inferred. Dashed blue-grey links are company secretaries. Click any node to explore.Most connected
Working out who is most connected...
Finances
Financial history
No figures in the accounts data we hold.
Companies House shows accounts made up to 28 February 2022 (micro-entity). They are not in the machine-readable bulk accounts files we read: they may have been filed on paper or as a PDF, or the company is large and files in another format. Nothing is shown rather than a guess.
Key dates and compliance
- Accounts category
- Micro-entityThe smallest category of accounts, with a very short balance sheet.
- Accounts last made up to
- 28 February 2022
- Next accounts due
- 30 November 2023 Overdue by 1079 daysAlready past due when the company file was taken (1 October 2026). If it has been filed since, this clears at the next monthly file.
- Confirmation statement last made up to
- 28 February 2023
- Next confirmation statement due
- 14 March 2024 Overdue by 974 daysAlready past due when the company file was taken (1 October 2026). If it has been filed since, this clears at the next monthly file.
- Charges (secured loans)
- None registered
Filing history at Companies House (opens in a new tab)
Source: Companies House company file (1 October 2026) and, for new companies, the Companies Act timetable. Contains public sector information licensed under the Open Government Licence v3.0.
About
About this company
Companies House (opens in a new tab)- Company number
- SC418067
- Company type
- Private limited company
- Status
- Active - proposal to strike off
- Jurisdiction
- Scotland
- Incorporated
- 28 February 2012
- Registered office
- Unit 21 Lime Road, Broadmeadow Industrial Estate, Dumbarton, G82 2RP
- Nature of business (SIC)
- 43342 Glazing
- Group companies
- 8 in this ownership group See the group structure →
- Latest accounts
- 28 February 2022 (micro-entity)
Source: Companies House company file of 1 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
Key dates and compliance
- Accounts category
- Micro-entityThe smallest category of accounts, with a very short balance sheet.
- Accounts last made up to
- 28 February 2022
- Next accounts due
- 30 November 2023 Overdue by 1079 daysAlready past due when the company file was taken (1 October 2026). If it has been filed since, this clears at the next monthly file.
- Confirmation statement last made up to
- 28 February 2023
- Next confirmation statement due
- 14 March 2024 Overdue by 974 daysAlready past due when the company file was taken (1 October 2026). If it has been filed since, this clears at the next monthly file.
- Charges (secured loans)
- None registered
Filing history at Companies House (opens in a new tab)
Source: Companies House company file (1 October 2026) and, for new companies, the Companies Act timetable. Contains public sector information licensed under the Open Government Licence v3.0.
Same registered address
2iMatched on postcode and first line of the registered office, from the company file of 1 October 2026. A shared address is not evidence that companies are connected.2 companies are registered at this address.
Same sector and place
6iA sample. Matched on the main business code and postcode district, from the company file of 1 October 2026. Same sector and district is not evidence of any connection.6 other active companies have the same main business code (43342 Glazing) and a registered office in the G82 postcode district.
Ownership
Group structure
8 companies- Active
- Dissolved or closed
- Other status
- Not a UK company
- Current control
- Ceased control
- Shares a director
- Bar under a name: net assets or equity, where known
Loading the group structure…
Built from the corporate people with significant control records matched to UK companies (Companies House, Open Government Licence v3.0; ownership graph of 19 September 2026). Control is shown as the nature of control the controller declared; the group count includes only active majority holdings (more than 50%), so holdings of 25-50% are drawn but not counted. Overseas parents that are not on the UK register appear only when a company names them.
People with significant control
1| Name | Control | Notified | Ceased |
|---|---|---|---|
| Michael Joseph O'NeillPerson · British |
| 7 April 2016 | Current |
1 current controller and 0 former. Addresses and birth details are not shown.
Source: Companies House people with significant control data, snapshot of 1 October 2026. Contains public sector information licensed under the Open Government Licence v3.0. Companies are linked to their page where the name matches an owner company in our ownership graph.
Companies it controls
iNo other company in our records lists this company as a person with significant control.From the people with significant control data of the companies in the Companies House company file.