- Company number
- 11905531
- Incorporated
- 26 Mar 20197 years trading
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Construction of commercial buildings; Construction of utility projects for fluids; Construction of water projects; Construction of other civil engineering projects n.e.c.
Source Civil UK Ltd is a 7-year-old private limited company registered in London, company number 11905531, one of 12,075 building contractors in London. Companies House shows its accounts as overdue: they were due on 30 September 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 up £227K (+165.2%) on the year before, to £365K.
- Net assets rose in 2 of 5 year-on-year comparisons on record.
- Current assets of £1.8M against £2.1M owed within a year: 0.9 times cover.
- 4 employees on average, up from 2 the year before.
- Balance sheets on record for 6 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £365K | £1M | £1.8M | £2.1M | 4 |
| 31 Dec 2023 | £138K | £542K | £1.8M | £1.9M | 2 |
| 31 Dec 2022 | £1 | £1 | 0 | ||
| 31 Mar 2022 | £1 | £1 | 0 | ||
| 31 Mar 2021 | £1 | £1 | 0 | ||
| 31 Mar 2020 | £1 | £1 |
Who runs and owns Source Civil UK Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| E*** H*** | Director | Mar 2019 |
| E*** H*** | Secretary | Mar 2019 |
Person with significant control
Where Source Civil UK Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
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- Pronto Roofing and Construction LtdRoofers
- Instal Systems LtdPlumbers and heating engineers
- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Shared registered office
2,436 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 Source Civil UK 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 | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- 11905531
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 March 2019 (7 years ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of utility projects for fluids (SIC 42210)
Construction of water projects (SIC 42910)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 December (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 2 March 2026
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.
- South Constructions Ltd2015
- South Cornwall Construction Services Limited2024
- South East Builders Ltd2026
- South Kent Interiors Ltd2021
- South London Conversions Ltd2014
- South London Renovations Ltd2013
- South Somerset Cans Ltd2025
- South West Construction Ltd2015
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Source Civil UK Ltd's accounts due?
Source Civil UK Ltd's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Source Civil UK Ltd's CT600 due?
The CT600 for the period to 31 December 2025 is due at HMRC by 31 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2026.
Is Source Civil UK Ltd still trading?
Source Civil UK Ltd is listed as active on the Companies House register (checked 13 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 Source Civil UK Ltd do?
Source Civil UK Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of utility projects for fluids (SIC 42210); Construction of water projects (SIC 42910); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Source Civil UK Ltd?
Source Civil UK Ltd was incorporated on 26 March 2019, 7 years ago.
Who runs Source Civil UK Ltd?
Source Civil UK Ltd has 1 active director, the longest-serving appointed in Mar 2019. Their names and service addresses are on the Companies House register.
Who owns Source Civil UK Ltd?
One person or company has significant control of Source Civil UK Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Source Civil UK 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 Source Civil UK Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.