- Companies
- Electricians
- London
- Source Int HQ Ltd
Source Int HQ Ltd
- Company number
- 10540592
- Incorporated
- 28 Dec 20169 years trading
- Registered office
- International House, 36-38 Cornhill, London, EC3V 3NG
- Nature of business
- Electrical installation; Other construction installation; Other information technology service activities
Source Int HQ Ltd is a 9-year-old private limited company registered in London, company number 10540592, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £2,485 (-8.6%) on the year before, to £26K.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £29K against £2,407 owed within a year: more than 10 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £26K | £29K | £2,407 | 0 | |
| 30 Jun 2024 | £29K | £29K | £0 | 0 | |
| 30 Jun 2023 | £30K | £31K | £1,200 | 0 | |
| 30 Jun 2022 | £32K | £33K | £1,865 | 0 | |
| 30 Jun 2021 | £28K | £40K | £12K | 0 | |
| 30 Jun 2020 | £29K | £56K | £27K | 0 | |
| 30 Jun 2019 | £25K | £169K | £144K | ||
| 31 Dec 2017 | £1,380 | £1,471 | £91 |
Where Source Int HQ Ltd is registered
The registered office is in London (EC3V), in the City of London local authority area, London. Show EC3V 3NG on a map.
Other trade companies in EC3V
- Rekondition LtdRepair services
- Revora Cleaning & Hygiene Solutions LtdCleaning companies
- Kingston Leeds LimitedProperty developers
- Riverside Cleaning Group LtdCleaning companies
- Milman Services LtdInstallers
- F and F Electrical Services LtdElectricians
- Lilyame LimitedProperty developers
- Truewatt LtdElectricians
Also registered at this address
17 other companies use the same registered office as Source Int HQ Ltd.
- Beh Interiors LimitedFinishing trades
- Caluxon Group LimitedBuilders
- Capital Hiu Engineers LimitedPlumbers and heating engineers
- Clickauto LimitedMotor traders
- Elite Engineers LtdElectricians
- Fieldbase Estate LimitedProperty developers
- Hak Projects LimitedPlumbers and heating engineers
- KS Roof Master LimitedBuilders
- Lambo-Car LtdMechanics and garages
- Mge Facilities LtdBuilders
- Mgu Construction LtdFinishing trades
- MP Gestion LtdCivil engineering
- Nigel Legge Associates LimitedCivil engineering
- Property and Development Consultants LtdProperty developers
- Seven States LimitedProperty developers
- Switchd LtdCivil engineering
- Yaojiang Construction Engineering LtdSpecialist contractors
What happens if Source Int HQ 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 10540592
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 December 2016 (9 years ago)
- Registered office
- International House, 36-38 Cornhill, London, EC3V 3NG
- Nature of business
- Electrical installation (SIC 43210)
Other construction installation (SIC 43290)
Other information technology service activities (SIC 62090) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 27 December 2025
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in London
Other active electrical contractors registered in London.
- Sourced Edge Ltd2025
- South West London Electrical Services Ltd2023
- Southeast Electrical Contractors Limited2019
- Southern Eco Power Ltd2026
- Southern Green Services Ltd2008
- Southern Steppes Limited2020
- SP Electrics Ltd2026
- Spark & Flow Services Ltd2026
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Source Int HQ Ltd's accounts due?
Source Int HQ Ltd's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Source Int HQ Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Source Int HQ Ltd still trading?
Source Int HQ 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 Source Int HQ Ltd do?
Source Int HQ Ltd is registered under Electrical installation (SIC 43210); Other construction installation (SIC 43290); Other information technology service activities (SIC 62090).
How old is Source Int HQ Ltd?
Source Int HQ Ltd was incorporated on 28 December 2016, 9 years ago.
What is the penalty if Source Int HQ 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 Int HQ 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.