- Company number
- 14329438
- Incorporated
- 1 Sep 20224 years trading
- Registered office
- 20-22 Wenlock Road, London, N1 7GU
- Nature of business
- Construction of domestic buildings; Other building completion and finishing
Underway Construction Ltd is a 4-year-old private limited company registered in London, company number 14329438, one of 12,075 building contractors in London. Companies House shows its accounts as overdue: they were due on 1 October 2026.
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 £4,827 on the year before, to -£4,826.
- Current assets of £23K against £26K owed within a year: 0.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2023 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | -£4,826 | £23K | £26K | 1 | |
| 30 Sep 2023 | £1 |
Where Underway Construction Ltd is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 7GU on a map.
Other trade companies in N1
- Tagwise LtdSpecialist contractors
- Sphere Aviation Solutions UK LtdMachinery repair and installation
- Get IT Done Builders LtdJoiners and carpenters
- Evolution Products LimitedMotor traders
- Fleetstone Trading LtdMotor traders
- Kenneth Brady LtdElectricians
- UK Import Export LtdBuilders
- Magic Door Services LimitedMachinery repair and installation
Shared registered office
804 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 Underway Construction Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Oct 2026 to 1 Nov 2026 | £150 |
| 1 to 3 months late | 2 Nov 2026 to 1 Jan 2027 | £375 |
| 3 to 6 months late | 2 Jan 2027 to 1 Apr 2027 | £750 |
| More than 6 months late | From 2 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 2 Jan 2027 | £200 |
| 3 months late | 1 Apr 2027 | another £200 |
| 6 months late | 1 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 1 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
- 14329438
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 September 2022 (4 years ago)
- Registered office
- 20-22 Wenlock Road, London, N1 7GU
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390) - Year end
- 1 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 31 August 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 London
Other active building contractors registered in London.
- Unica Construction Ltd2021
- Unica Electrical Solutions Ltd2023
- Unick Interiors Ltd2025
- Unik Construction London Limited2025
- Unique Bathroom and Plumbing Ltd2022
- Unique Builders & Plasterers Ltd2023
- Unique Choice Construction Limited2024
- Unique Design Projects Ltd2021
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Underway Construction Ltd's accounts due?
Underway Construction Ltd's accounts were due at Companies House on 1 October 2026 and the register shows them as overdue.
When is Underway Construction Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 1 January 2026, due by 1 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Underway Construction Ltd still trading?
Underway Construction Ltd is listed as active on the Companies House register (checked 12 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 Underway Construction Ltd do?
Underway Construction Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390).
How old is Underway Construction Ltd?
Underway Construction Ltd was incorporated on 1 September 2022, 4 years ago.
What is the penalty if Underway 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 Underway Construction Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.