Siron 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
Siron Limited's network
2 people1 organisationExplore in 3Di2 listed on the board. 1 organisation shares a board member with this company.The large node is Siron 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
2 listediDirectors and secretaries as filed at Companies House.| Name | Role | Since | On the board |
|---|---|---|---|
| Ezmaii Bulsara-Crosbie | Director | 2025 | 1y 6m |
| Naomii Crosbie Serrant | Director | 2025 | 1y 6m |
Recent news and events
From the public record
- 21 June 2026Confirmation statement made up to this dateCompanies House company file
- 18 November 2025Ronald Crosbie left as directorCompanies House officer data
- 31 July 2025Accounts made up to this dateCompanies House company file
- 20 April 2025Ezmaii Bulsara-Crosbie appointed directorCompanies House officer data
- 15 April 2025Naomii Crosbie Serrant appointed directorCompanies House officer data
Appointments, resignations and filings held in the Companies House data, and insolvency notices from The Gazette (Open Government Licence v3.0).
Board
Current officers
2iOccupation 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 |
|---|---|---|---|
| Naomii Crosbie Serrant | Director | 15 April 2025 | 1 other current board |
| Ezmaii Bulsara-Crosbie | Director | 20 April 2025 | No other current boards on our record |
Source: Companies House officer data (appointments and resignations). Contains public sector information licensed under the Open Government Licence v3.0.
Former officers
2 listed, latest first| Name | Role | Appointed | Left |
|---|---|---|---|
| Ronald Crosbie | Director | 3 October 2002 | 18 November 2025 |
| Simon Williams | Company secretary | 3 October 2000 | 19 October 2022 |
When board seats may change
iTime on the board since appointment. Many boards cap service at 6 to 9 years, so long-serving seats are the ones most likely to change.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.2 directors on the board
- Naomii Crosbie Serrant Director · appointed 2025
- Ezmaii Bulsara-Crosbie Director · appointed 2025
First-time vs portfolio directors
First-time (1)
- Ezmaii Bulsara-Crosbie Director · appointed 2025
Portfolio (1)
- Naomii Crosbie Serrant Director · appointed 2025
Left in the last 12 months
- Ronald Crosbie Director · appointed 2002 · resigned 2025
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.
Network
Network
iThe large node is Siron 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
6 years heldiHover over the chart, or focus it and use the left and right arrow keys, to read each year. Every figure is also in the table.Scroll sideways to see every column.
| Year ending | Accounts | Turnover | Profit or loss | Net assets | Total assets less current liabilities | Cash | Employees |
|---|---|---|---|---|---|---|---|
| 31 July 2025 | FRS102 | Not reported | Not reported | £125.77k | £798.57k | £108.98k | 64 |
| 31 July 2023 | FRS102 | Not reported | Not reported | £456.11k | £1.47m | £216.36k | 0 |
| 31 July 2022 | FRS102 | Not reported | Not reported | £364.45k | £378.91k | £20.61k | 0 |
| 31 July 2021 | FRS102 | Not reported | Not reported | £390.74k | £404.99k | £1.11k | 0 |
| 31 July 2020 | FRS102 | Not reported | Not reported | £471.27k | £471.27k | £2.66k | 2 |
| 31 July 2019 | FRS102 | Not reported | Not reported | £545.47k | £595.98k | £6 | Not reported |
- Absent is not zero. A figure shown as Not reported was not given in the accounts we hold. Small and micro companies do not have to file a profit and loss account, so turnover and profit are usually absent for them.
- Accounts for years ending in 2025 and 2026 are still being filed, so the newest years may be missing.
- Employees, cash and net assets are shown as Not shown when the filed figure is not possible (for example a negative headcount or negative cash).
Definitions
- Total assets less current liabilities
- Fixed assets plus current assets, minus what the company owes within a year. It is not total assets: cash can be larger than this figure when the company owes a lot in the short term. Where a filing does not give it, the table marks the fixed-assets figure used instead.
- Net assets
- What the company owns minus everything it owes. Also called shareholders' funds.
- Turnover
- Sales for the year. Only larger companies report it.
- Accounts
- The accounting framework named in the filing (for example FRS 102). Not stated means the filing does not say.
Source: Companies House accounts (iXBRL and XBRL), ten most recent years held, read by Governance Register from the monthly bulk accounts files. Contains public sector information licensed under the Open Government Licence v3.0.
Key dates and compliance
- Accounts category
- Total exemption fullSmall company accounts; the company is exempt from audit.
- Accounts last made up to
- 31 July 2025
- Next accounts due
- 30 April 2027 Not yet due
- Confirmation statement last made up to
- 21 June 2026
- Next confirmation statement due
- 5 July 2027 Not yet due
- Charges (secured loans)
- 3 charges registered, 3 outstanding, 0 part satisfied, 0 satisfied
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
- SC211601
- Company type
- Private limited company
- Status
- Active
- Jurisdiction
- Scotland
- Incorporated
- 3 October 2000
- Registered office
- C/O Forvis Mazars LLP, Capital Square, 58 Morrison Street, Edinburgh, EH3 8BP
- Nature of business (SIC)
- 74909 Other professional, scientific and technical activities n.e.c.
- Group companies
- 2 in this ownership group See the group structure →
- Latest accounts
- 31 July 2025 (total exemption full)
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
- Total exemption fullSmall company accounts; the company is exempt from audit.
- Accounts last made up to
- 31 July 2025
- Next accounts due
- 30 April 2027 Not yet due
- Confirmation statement last made up to
- 21 June 2026
- Next confirmation statement due
- 5 July 2027 Not yet due
- Charges (secured loans)
- 3 charges registered, 3 outstanding, 0 part satisfied, 0 satisfied
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
12iMatched 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.12 companies are registered at this address.
Same sector and place
122iThe list starts with a sample; Show all lists every one. 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.122 other active companies have the same main business code (74909 Other professional, scientific and technical activities n.e.c.) and a registered office in the EH3 postcode district.
- Lifestyle Angels Ltd (dissolved 2026)
- Resolution Real Estate V SLP GP Limited
- Charlotte Secretaries Limited
- Morton Fraser Nominees Limited
- Resolution Real Estate IV SLP GP Limited
- Thistle Scientific Limited
Showing 6 of 122Show moreShow fewerShow all 122 →
Recent news and events
From the public record
- 21 June 2026Confirmation statement made up to this dateCompanies House company file
- 18 November 2025Ronald Crosbie left as directorCompanies House officer data
- 31 July 2025Accounts made up to this dateCompanies House company file
- 20 April 2025Ezmaii Bulsara-Crosbie appointed directorCompanies House officer data
- 15 April 2025Naomii Crosbie Serrant appointed directorCompanies House officer data
Appointments, resignations and filings held in the Companies House data, and insolvency notices from The Gazette (Open Government Licence v3.0).
Ownership
Group structure
2 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
5| Name | Control | Notified | Ceased |
|---|---|---|---|
| Fren&Co LtdCompany |
| 18 November 2025 | Current |
| Mrs Ezmaii Bulsara-D'AnjouPerson · British |
| 18 November 2025 | 18 November 2025 |
| Mrs Naomii Crosbie SerrantPerson · British |
| 18 November 2025 | 18 November 2025 |
| Mr Simon WilliamsPerson · British |
| 6 April 2016 | 14 June 2023 |
| Mr Ronald CrosbiePerson · British |
| 6 April 2016 | 18 November 2025 |
1 current controller and 4 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 holds shares or votes in
0| Company | Control | Notified | Ceased |
|---|---|---|---|
| Jamma Umoja (Community Services) Limited (dissolved 2020)Dissolved | 75-100% shares, 75-100% votes | 6 April 2016 | Current |
| FPJ Limited | 75-100% shares, 75-100% votes | 6 April 2016 | Current |
| Jamma Umoja (Residential Services) Limited | 75-100% shares, 75-100% votes | 6 April 2016 | Current |
| Jamma Umoja Psychology Limited (dissolved 2017)Dissolved | 25-50% shares, 25-50% votes | 6 April 2016 | Current |
0 companies where it holds a majority now (more than 50% of shares or votes, or the right to appoint or remove a majority of the directors); holdings of 25-50% are significant influence or control, not majority control. The whole group is in the structure above.