- Companies
- Civil engineering
- Glasgow
- Seanduffy Limited
Seanduffy Limited
- Company number
- SC762567
- Incorporated
- 16 Mar 20233 years trading
- Registered office
- 24 Keppel Drive, Glasgow, G44 4JZ
- Nature of business
- Construction of utility projects for electricity and telecommunications
Seanduffy Limited is a 3-year-old private limited company registered in Glasgow, company number SC762567, one of 258 civil engineering contractors in Glasgow. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Seanduffy LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £4,825 (+7.9%) on the year before, to £66K.
- Current assets of £89K against £26K owed within a year: 3.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £66K | £89K | £26K | 2 | |
| 31 Mar 2025 | £61K | £88K | £30K | 2 | |
| 31 Mar 2024 | £17K | £26K | £9,243 | 1 |
Where Seanduffy Limited is registered
The registered office is in Glasgow (G44), in the Glasgow City local authority area, Scotland. Show G44 4JZ on a map.
Other trade companies in G44
- BJB Access LtdScaffolders
- Jab Energy LtdInstallers
- DS Project Management LtdCivil engineering
- Scottgas LimitedPlumbers and heating engineers
- NRB Plant LtdCivil engineering
- CMD Joinery All Aspects LtdJoiners and carpenters
- DFW Contracts LimitedInstallers
- Elevate Cleaning Solutions LtdCleaning companies
What happens if Seanduffy 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC762567
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 March 2023 (3 years ago)
- Registered office
- 24 Keppel Drive, Glasgow, G44 4JZ
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 15 March 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Glasgow
Other active civil engineering contractors registered in Glasgow.
- Serenity Water Features Ltd2026
- SF Contracting Limited2024
- SLS Engineering Limited2023
- SPM Scaffolding & Access Limited2026
- Statement Projects Ltd2025
- Steel Groundwork Services Limited2021
- Stellify Civil Engineering Limited2025
- T Watson Contracts Limited2023
All civil engineering contractors in Glasgow · All trades in Glasgow · Civil engineering across the UK
Frequently asked questions
When are Seanduffy Limited's accounts due?
Seanduffy Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Seanduffy Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Seanduffy Limited still trading?
Seanduffy 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 Seanduffy Limited do?
Seanduffy Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Seanduffy Limited?
Seanduffy Limited was incorporated on 16 March 2023, 3 years ago.
What is the penalty if Seanduffy 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 Seanduffy 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.