- Companies
- Civil engineering
- London
- Abt Construction Services Ltd
Abt Construction Services Ltd
- Company number
- 11610770
- Incorporated
- 8 Oct 20188 years trading
- Registered office
- Apex House 2ND Floor, Grand Arcade, London, N12 0EH
- Nature of business
- Construction of other civil engineering projects n.e.c.; Roofing activities
Abt Construction Services Ltd is a 8-year-old private limited company registered in London, company number 11610770, one of 1,853 civil engineering contractors in London. 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 up £21K (+91.9%) on the year before, to £44K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £113K against £78K owed within a year: 1.5 times cover.
- 7 employees on average, up from 3 the year before.
- 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 |
|---|---|---|---|---|---|
| 31 Oct 2025 | £44K | £80K | £113K | £78K | 7 |
| 31 Oct 2024 | £23K | £57K | £71K | £50K | 3 |
| 31 Oct 2023 | £39K | £134K | £141K | £103K | 3 |
| 31 Oct 2022 | £9,050 | £30K | £59K | £50K | 3 |
| 31 Oct 2021 | £9,986 | £54K | £68K | £58K | 0 |
| 31 Oct 2020 | £2,132 | £68K | £66K | 1 | |
| 31 Oct 2019 | £2,356 | £4,731 | £11K | £8,311 | 1 |
Where Abt Construction Services Ltd is registered
The registered office is in London (N12), in the Barnet local authority area, London. Show N12 0EH on a map.
Other trade companies in N12
- Sullivan Property and Maintenance LtdFacilities management
- Mael Property Services LtdFinishing trades
- Horizon Constructors LtdProperty developers
- Alfawine Group LimitedFinishing trades
- Sam Motors Group LimitedMotor traders
- Heating on Demand LtdPlumbers and heating engineers
- Premium Electrical LtdElectricians
- Amaiya Sparks LtdCleaning companies
Shared registered office
27 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 Abt Construction 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 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
- 11610770
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 October 2018 (8 years ago)
- Registered office
- Apex House 2ND Floor, Grand Arcade, London, N12 0EH
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Roofing activities (SIC 43910) - Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 28 March 2026
- Previous names
- Mullaj Contractors Limited (until 17 Mar 2022)
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 London
Other active civil engineering contractors registered in London.
- Abz Fibre Ltd2024
- Acd Rail Limited2025
- Acdc3Po Ltd2020
- Acqual Ltd2021
- Acs Building Ltd2023
- Acyd Group Ltd2023
- Ad Construction & Groundwork Ltd2020
- Adapol Ltd2019
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Abt Construction Services Ltd's accounts due?
Abt Construction Services Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Abt Construction Services 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 Abt Construction Services Ltd still trading?
Abt Construction 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 Abt Construction Services Ltd do?
Abt Construction Services Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Roofing activities (SIC 43910).
How old is Abt Construction Services Ltd?
Abt Construction Services Ltd was incorporated on 8 October 2018, 8 years ago.
What is the penalty if Abt Construction 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 Abt Construction Services 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.