- Companies
- Specialist contractors
- Darlington
- SW Lunnon Construction Ltd
SW Lunnon Construction Ltd
- Company number
- 11141172
- Incorporated
- 9 Jan 20188 years trading
- Registered office
- 43 Coniscliffe Road, Darlington, Co. Durham, DL3 7EH
- Nature of business
- Other specialised construction activities n.e.c.
SW Lunnon Construction Ltd is a 8-year-old private limited company registered in Darlington, company number 11141172, one of 66 specialist construction companies in Darlington. Its next accounts are due at Companies House on 30 October 2026, and the CT600 for the period to 30 January 2026 is due at HMRC on 30 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £44K (+58%) on the year before, to -£32K.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £75K against £98K owed within a year: 0.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jan 2025 | -£32K | £75K | £98K | 2 | |
| 30 Jan 2024 | -£77K | £11K | £70K | 2 | |
| 30 Jan 2023 | -£73K | £11K | £56K | 2 | |
| 30 Jan 2022 | -£61K | £172K | £80K | 2 | |
| 30 Jan 2021 | -£19K | £216K | £58K | 2 | |
| 30 Jan 2020 | -£6,183 | £113K | £122K | 2 | |
| 31 Jan 2019 | -£934 | -£66K | £69K | 2 |
Where SW Lunnon Construction Ltd is registered
The registered office is in Darlington (DL3), in the Darlington local authority area, North East. Show DL3 7EH on a map.
Other trade companies in DL3
- Shine With Helen LtdCleaning companies
- RJB Consultants LtdInstallers
- Garry's Car Valeting LtdCleaning companies
- Go Elite Cleaning Services LtdCleaning companies
- BGP Property LtdProperty developers
- Frontier Energy Services LtdPlumbers and heating engineers
- Andrew Morgan Joinery LtdJoiners and carpenters
- Aburns Engineering LtdBuilders
Shared registered office
32 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if SW Lunnon Construction 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Oct 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 30 Jan 2027 | £375 |
| 3 to 6 months late | 31 Jan 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Jan 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 30 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jan 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
- 11141172
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 January 2018 (8 years ago)
- Registered office
- 43 Coniscliffe Road, Darlington, Co. Durham, DL3 7EH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 January 2025
- Last confirmation statement
- 8 January 2026
- Charges (mortgages)
- 0 outstanding of 1 registered
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Darlington
Other active specialist construction companies registered in Darlington.
- Three-6 Building Control Ltd2026
- Tica Certification Limited2025
- Tsu Limited2013
- Vanguard Property Care Ltd2026
- VSM Access Ltd2026
- West End Tree and Landscaping Limited2019
- Whessoe Road Aggregates Ltd2025
- Absass Limited2018
All specialist construction companies in Darlington · All trades in Darlington · Specialist contractors across the UK
Frequently asked questions
When are SW Lunnon Construction Ltd's accounts due?
SW Lunnon Construction Ltd's next accounts are due at Companies House by 30 October 2026 (in 17 days), covering the period to 30 January 2026.
When is SW Lunnon Construction Ltd's CT600 due?
The CT600 for the period to 30 January 2026 is due at HMRC by 30 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 October 2026.
Is SW Lunnon Construction Ltd still trading?
SW Lunnon Construction 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 SW Lunnon Construction Ltd do?
SW Lunnon Construction Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is SW Lunnon Construction Ltd?
SW Lunnon Construction Ltd was incorporated on 9 January 2018, 8 years ago.
What is the penalty if SW Lunnon Construction 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 SW Lunnon Construction Ltd 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.