- Company number
- 09858031
- Incorporated
- 5 Nov 201510 years trading
- Registered office
- 18 Temsford Close, Harrow, HA2 6LB
- Nature of business
- Construction of domestic buildings
Athos Construction Ltd is a 10-year-old private limited company registered in Harrow, company number 09858031, one of 793 building contractors in Harrow. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £34K (-759.3%) on the year before, to -£30K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £14K against £13K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- 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 Oct 2025 | -£30K | £14K | £13K | 1 | |
| 31 Oct 2024 | £4,529 | £3,470 | 1 | ||
| 31 Oct 2023 | -£16K | £17K | 2 | ||
| 31 Oct 2022 | -£23K | £2,979 | 0 | ||
| 31 Oct 2021 | -£11K | £1,934 | 2 | ||
| 31 Oct 2020 | -£12K | £12K | 2 | ||
| 31 Oct 2019 | £4,021 | £4,021 | 2 | ||
| 31 Oct 2018 | £2,988 | £2,988 | £0 | ||
| 31 Oct 2017 | £1,865 | £2,290 | £425 | 3 | |
| 31 Oct 2016 | £2,759 | £3,424 | £665 |
Where Athos Construction Ltd is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 6LB on a map.
Other trade companies in HA2
- KJP Engineering LtdElectricians
- JNJ Engineering LimitedCivil engineering
- Notting Hill Sew LtdRepair services
- Grandwellautos LtdMotor traders
- Multisteel Powdercoating LtdPainters and decorators
- Neon Systems LtdElectricians
- Firstclass Facilities LtdCleaning companies
- PMD Construct LtdBuilders
What happens if Athos 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 09858031
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 November 2015 (10 years ago)
- Registered office
- 18 Temsford Close, Harrow, HA2 6LB
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 1 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.
- Atj Construction Ltd2020
- Atlas Coe Limited2010
- Ats Builders Limited2022
- Attila Waterproofing Ltd2026
- Aty Construction Ltd2019
- Auris Construction Ltd2008
- Avi Drylining Ltd2024
- Ayan Projects Ltd2026
All building contractors in Harrow · All trades in Harrow · Builders across the UK
Frequently asked questions
When are Athos Construction Ltd's accounts due?
Athos Construction Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Athos Construction Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Athos Construction Ltd still trading?
Athos 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 Athos Construction Ltd do?
Athos Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Athos Construction Ltd?
Athos Construction Ltd was incorporated on 5 November 2015, 10 years ago.
What is the penalty if Athos 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 Athos 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.