- Company number
- 04178598
- Incorporated
- 13 Mar 200125 years trading
- Registered office
- 15 Littleton Road, Harrow, HA1 3SY
- Nature of business
- Construction of domestic buildings
Swan Contractors Ltd is a 25-year-old private limited company registered in Harrow, company number 04178598, one of 793 building contractors in Harrow. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 down £14K (-135.9%) on the year before, to -£3,613.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £48K against £50K owed within a year: 0.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£3,613 | £48K | £50K | 0 | |
| 31 Mar 2024 | £10K | £154K | £84K | 2 | |
| 31 Mar 2023 | £14K | £17K | £179K | £80K | 2 |
| 31 Mar 2022 | £31K | £235K | £92K | 4 | |
| 31 Mar 2021 | £49K | £138K | £58K | 3 | |
| 31 Mar 2020 | £54K | £83K | £36K | 3 | |
| 31 Mar 2019 | £46K | £90K | £52K | ||
| 31 Mar 2018 | -£22K | -£133K | £102K | 3 | |
| 31 Mar 2017 | £2,133 | £12K | £133K | £137K | 4 |
| 31 Mar 2016 | £7,160 | £5,687 | £185K | £179K |
Public contracts won
Swan Contractors Ltd has one public sector contract award on record; the ones with their own published value total £308K (2022). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| London Borough of Hillingdon | Asha Day Centre - Remodelling into Nursery | £308K | 29 Jun 2022 |
Where Swan Contractors Ltd is registered
The registered office is in Harrow (HA1), in the Brent local authority area, London. Show HA1 3SY on a map.
Other trade companies in HA1
- Cabos Electrical LimitedElectricians
- Mia Maria Services LtdCleaning companies
- Ac Operations LtdScaffolders
- Verde Masters LtdLandscapers and gardeners
- Omega Works Group LtdLandscapers and gardeners
- Call 'Em LimitedPlumbers and heating engineers
- Swan Roofing Services LimitedRoofers
- DRV Property Solutions LtdPainters and decorators
Also registered at this address
1 other company uses the same registered office as Swan Contractors Ltd.
- Swan Property Developers LimitedProperty developers
What happens if Swan Contractors 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 04178598
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 March 2001 (25 years ago)
- Registered office
- 15 Littleton Road, Harrow, HA1 3SY
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 18 November 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Harrow
Other active building contractors registered in Harrow.
- Swift Struct Group Ltd2025
- T M R Builders Ltd2025
- T&C Ciurciumel Ltd2013
- Talina Builders Limited1978
- Tao Projects Ltd2025
- Tariuc Brickwork Ltd2019
- TBK Construction Ltd2025
- TC Building Team Ltd2019
All building contractors in Harrow · All trades in Harrow · Builders across the UK
Frequently asked questions
When are Swan Contractors Ltd's accounts due?
Swan Contractors Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Swan Contractors Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Swan Contractors Ltd still trading?
Swan Contractors 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 Swan Contractors Ltd do?
Swan Contractors Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Swan Contractors Ltd?
Swan Contractors Ltd was incorporated on 13 March 2001, 25 years ago.
Has Swan Contractors Ltd won public sector contracts?
Yes. Swan Contractors Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £308K), most recently from London Borough of Hillingdon.
What is the penalty if Swan Contractors 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 Swan Contractors 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.