- Companies
- Civil engineering
- Southampton
- Iga Signalling Limited
Iga Signalling Limited
- Company number
- 07809708
- Incorporated
- 13 Oct 201114 years trading
- Registered office
- 9 Selborne Avenue, Southampton, Hampshire, SO18 5DZ
- Nature of business
- Construction of railways and underground railways; Electrical installation
Iga Signalling Limited is a 14-year-old private limited company registered in Southampton, company number 07809708, one of 114 civil engineering contractors in Southampton. Its next accounts are due at Companies House on 1 June 2027, and the CT600 for the period to 1 September 2026 is due at HMRC on 1 September 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 £29K (-99.4%) on the year before, to £171.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £4,271 against £20K owed within a year: 0.2 times cover.
- 1 employee on average, down from 2 the year before.
- 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 |
|---|---|---|---|---|---|
| 1 Sep 2025 | £171 | £4,271 | £20K | 1 | |
| 1 Sep 2024 | £29K | £33K | £17K | 2 | |
| 1 Sep 2023 | £41K | £9,787 | £23K | 2 | |
| 1 Sep 2022 | £41K | £4,168 | £32K | 2 | |
| 1 Sep 2021 | £41K | £22K | 2 | ||
| 1 Sep 2020 | £41K | £22K | £0 | 2 | |
| 1 Sep 2019 | £41K | £33K | £12K | 2 | |
| 1 Sep 2018 | £41K | £35K | £13K | ||
| 1 Sep 2017 | £39K | £32K | £13K | ||
| 1 Sep 2016 | £24K | £30K | £33K | £29K |
Where Iga Signalling Limited is registered
The registered office is in Southampton (SO18), in the Southampton local authority area, South East. Show SO18 5DZ on a map.
Other trade companies in SO18
- Nationwide Steelfixing LtdBuilders
- Terraline LimitedSpecialist contractors
- Omni Group Holdings LtdSpecialist contractors
- Zammit Property Developments LtdProperty developers
- Shotton Marine LtdMachinery repair and installation
- Amiri Mobile Mechanic LtdMechanics and garages
- Roofing Building & Maintenance LtdSpecialist contractors
- The Tidy Life LtdCleaning companies
What happens if Iga Signalling Limited 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 1 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Jun 2027 to 1 Jul 2027 | £150 |
| 1 to 3 months late | 2 Jul 2027 to 1 Sep 2027 | £375 |
| 3 to 6 months late | 2 Sep 2027 to 1 Dec 2027 | £750 |
| More than 6 months late | From 2 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 2 Sep 2027 | £200 |
| 3 months late | 1 Dec 2027 | another £200 |
| 6 months late | 1 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 1 Sep 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
- 07809708
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 October 2011 (14 years ago)
- Registered office
- 9 Selborne Avenue, Southampton, Hampshire, SO18 5DZ
- Nature of business
- Construction of railways and underground railways (SIC 42120)
Electrical installation (SIC 43210) - Year end
- 1 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 1 September 2025
- Last confirmation statement
- 13 October 2025
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 Southampton
Other active civil engineering contractors registered in Southampton.
- Imperial Traffic Management Ltd2021
- J&G Gibbs Limited2006
- Jab Civils Ltd2026
- Jane Field Limited2012
- Jarvis Mechanical Engineering Limited2008
- JB Utility Services Ltd2017
- Jbu Ltd2026
- JDS Plant Ltd2013
All civil engineering contractors in Southampton · All trades in Southampton · Civil engineering across the UK
Frequently asked questions
When are Iga Signalling Limited's accounts due?
Iga Signalling Limited's next accounts are due at Companies House by 1 June 2027 (in 232 days), covering the period to 1 September 2026.
When is Iga Signalling Limited's CT600 due?
The CT600 for the period to 1 September 2026 is due at HMRC by 1 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 2 June 2027.
Is Iga Signalling Limited still trading?
Iga Signalling Limited 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 Iga Signalling Limited do?
Iga Signalling Limited is registered under Construction of railways and underground railways (SIC 42120); Electrical installation (SIC 43210).
How old is Iga Signalling Limited?
Iga Signalling Limited was incorporated on 13 October 2011, 14 years ago.
What is the penalty if Iga Signalling Limited 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 Iga Signalling Limited 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.