- Companies
- Civil engineering
- Widnes
- SLK Civils Limited
SLK Civils Limited
- Company number
- 17006066
- Incorporated
- 2 Feb 2026
- Registered office
- Unit 1-3 Salisbury Street, Salisbury Street, Widnes, Cheshire, WA8 6PJ
- Nature of business
- Construction of other civil engineering projects n.e.c.
SLK Civils Limited is a newly incorporated private limited company registered in Widnes, company number 17006066, one of 28 civil engineering contractors in Widnes. Its next accounts are due at Companies House on 2 November 2027, and its first CT600 is due at HMRC on 1 February 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Who runs and owns SLK Civils Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| K*** J*** | Director | Feb 2026 |
| S*** J*** | Director | Feb 2026 |
People with significant control (2)
Where SLK Civils Limited is registered
The registered office is in Widnes (WA8), in the Halton local authority area, North West. Show WA8 6PJ on a map.
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What happens if SLK Civils 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 2 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 3 Nov 2027 to 2 Dec 2027 | £150 |
| 1 to 3 months late | 3 Dec 2027 to 2 Feb 2028 | £375 |
| 3 to 6 months late | 3 Feb 2028 to 2 May 2028 | £750 |
| More than 6 months late | From 3 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 17006066
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 February 2026
- Registered office
- Unit 1-3 Salisbury Street, Salisbury Street, Widnes, Cheshire, WA8 6PJ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
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 Widnes
Other active civil engineering contractors registered in Widnes.
- Terence Smith Ltd2015
- Adtrad Ltd2025
- Atkinson Civil Engineering Limited2020
- Broughton Mechanical & Civil Engineering Limited1985
- CC Power Limited2011
- CJW North West Ltd2021
- DRL Civil Building & Maintenance Ltd2019
- G A Webb Limited2003
All civil engineering contractors in Widnes · All trades in Widnes · Civil engineering across the UK
Frequently asked questions
When are SLK Civils Limited's accounts due?
SLK Civils Limited's next accounts are due at Companies House by 2 November 2027 (in 384 days), covering the period to 28 February 2027.
When is SLK Civils Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 1 February 2027, due by 1 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is SLK Civils Limited still trading?
SLK Civils 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 SLK Civils Limited do?
SLK Civils Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is SLK Civils Limited?
SLK Civils Limited was incorporated on 2 February 2026, less than a year ago.
Who runs SLK Civils Limited?
SLK Civils Limited has 2 active directors, the longest-serving appointed in Feb 2026. Their names and service addresses are on the Companies House register.
Who owns SLK Civils Limited?
2 people or companies have significant control of SLK Civils Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if SLK Civils 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 SLK Civils 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.