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- Specialist Engineering Technical Services Ltd
Company profile · Civil engineering
Specialist Engineering Technical Services Ltd
Specialist Engineering Technical Services Ltd is a 28-year-old private limited company registered in Denbigh, company number 03452010, one of 9 civil engineering contractors in Denbigh. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 December 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Specialist Engineering Technical Services Ltd over the years
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 down £39K (-109.9%) on the year before, to -£3,541.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £189K against £306K owed within a year: 0.6 times cover.
- 5 employees on average, up from 4 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£3,541 | £189K | £306K | 5 | |
| 31 Dec 2024 | £36K | £159K | £202K | 4 | |
| 31 Dec 2023 | £6,360 | £83K | £125K | 1 | |
| 31 Dec 2022 | £33K | £81K | £82K | 1 |
Public contracts won
Specialist Engineering Technical Services Ltd has one public sector contract award on record (2021). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Cyngor Gwynedd Council | NMWTRA Highway Assets & Systems Design Framework Contract 2021 | Ceiling, not shown | 1 Nov 2021 |
Where Specialist Engineering Technical Services Ltd is registered
The registered office is in Denbigh (LL16), in the Denbighshire local authority area, Wales. Show LL16 5AR on a map.
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What happens if Specialist Engineering Technical Services Ltd 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2028 | 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
- 03452010
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 October 1997 (28 years ago)
- Registered office
- The Old Scout Hall Denbigh Street, Henllan, Denbigh, Denbighshire, LL16 5AR
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 2 October 2025
- Charges (mortgages)
- 0 outstanding of 3 registered
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 Denbigh
Other active civil engineering contractors registered in Denbigh.
- WB Civils Ltd2025
- 360 Survey & Engineering Ltd2018
- Davies Offshore Fibre Ltd2026
- E Jones & Son Ltd2016
- Edwards Contractors NW Ltd2025
- Ejs Water Services Limited1997
- Lawson Civil Engineering & Utilities Limited2013
- Lewis Construction & Civil Engineering Services Ltd2014
All civil engineering contractors in Denbigh · All trades in Denbigh · Civil engineering across the UK
Frequently asked questions
When are Specialist Engineering Technical Services Ltd's accounts due?
Specialist Engineering Technical Services Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Specialist Engineering Technical Services Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Specialist Engineering Technical Services Ltd still trading?
Specialist Engineering Technical Services Ltd 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 Specialist Engineering Technical Services Ltd do?
Specialist Engineering Technical Services Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Specialist Engineering Technical Services Ltd?
Specialist Engineering Technical Services Ltd was incorporated on 20 October 1997, 28 years ago.
Has Specialist Engineering Technical Services Ltd won public sector contracts?
Yes. Specialist Engineering Technical Services Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Cyngor Gwynedd Council.
What is the penalty if Specialist Engineering Technical Services Ltd 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 Specialist Engineering Technical Services Ltd on Companies House for filed documents, officers and the full history.
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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.