- Companies
- Plumbers and heating engineers
- Dunfermline
- Secundum Limited
Secundum Limited
- Company number
- SC855842
- Incorporated
- 16 Jul 20251 year trading
- Registered office
- 3 Castle Court, Dunfermline, KY11 8PB
- Nature of business
- Plumbing, heat and air-conditioning installation; Management consultancy activities other than financial management
Secundum Limited is a 1-year-old private limited company registered in Dunfermline, company number SC855842, one of 35 plumbing and heating companies in Dunfermline. Its next accounts are due at Companies House on 30 April 2028, and the CT600 for the period to 31 July 2027 is due at HMRC on 31 July 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 July 2026, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Secundum Limited is registered
The registered office is in Dunfermline (KY11), in the Fife local authority area, Scotland. Show KY11 8PB on a map.
Other trade companies in KY11
- G&C Cleaning Specialist LtdCleaning companies
- 116117 LtdPlumbers and heating engineers
- Thistle and Stone Hard Landscaping LtdInstallers
- Meiklejoiners LtdJoiners and carpenters
- Fusebox Solutions LtdElectricians
- K Collins Rigging LtdCivil engineering
- Nodepoint Scaffolding Solutions LtdScaffolders
- Mitchell Clark Developments LtdProperty developers
Also registered at this address
13 other companies use the same registered office as Secundum Limited.
- Fossgar Services LimitedMachinery repair and installation
- GM Gardening Services LimitedLandscapers and gardeners
- H & O Building and Landscaping Services LimitedFinishing trades
- Hoffmann Gray Homes LimitedBuilders
- Holborn Bespoke LimitedJoiners and carpenters
- Izon Projects LtdInstallers
- K Low Rendering Services LtdPlasterers
- Kellock Electrical LimitedElectricians
- Milne Building Services LtdBuilders
- Newcrest Residential LimitedBuilders
- Prestige Steel Buildings LtdInstallers
- S Waugh the Builder LimitedFinishing trades
- Staks Development LtdProperty developers
What happens if Secundum Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 30 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2028 to 31 May 2028 | £150 |
| 1 to 3 months late | 1 Jun 2028 to 31 Jul 2028 | £375 |
| 3 to 6 months late | 1 Aug 2028 to 31 Oct 2028 | £750 |
| More than 6 months late | From 1 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 2029 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- SC855842
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 July 2025 (1 year ago)
- Registered office
- 3 Castle Court, Dunfermline, KY11 8PB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Management consultancy activities other than financial management (SIC 70229) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2026
- Last confirmation statement
- 28 August 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Dunfermline
Other active plumbing and heating companies registered in Dunfermline.
- SJH Heating Services Ltd2021
- Sustainable Homes Scotland Ltd2007
- The Heat Network Ltd2019
- Vizzini Bathrooms Ltd2010
- 506 Gas Services Limited2026
- A J Bathrooms and Boilers Ltd2017
- Achieve Plumbing,Heating & Renewables Ltd2026
- Alexander Thomson Plumbers Limited2024
All plumbing and heating companies in Dunfermline · All trades in Dunfermline · Plumbers and heating engineers across the UK
Frequently asked questions
When are Secundum Limited's accounts due?
Secundum Limited's next accounts are due at Companies House by 30 April 2028 (in 565 days), covering the period to 31 July 2027.
When is Secundum Limited's CT600 due?
The CT600 for the period to 31 July 2027 is due at HMRC by 31 July 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2028.
Is Secundum Limited still trading?
Secundum Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Secundum Limited do?
Secundum Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Management consultancy activities other than financial management (SIC 70229).
How old is Secundum Limited?
Secundum Limited was incorporated on 16 July 2025, 1 year ago.
What is the penalty if Secundum Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Secundum Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.