- Companies
- Machinery repair and installation
- London
- Autosigma Ltd
Autosigma Ltd
- Company number
- 13481423
- Incorporated
- 28 Jun 20215 years trading
- Registered office
- 28B Lawrence Road, London, N15 4EG
- Nature of business
- Repair and maintenance of other transport equipment n.e.c.; Other passenger land transport; Freight transport by road; Operation of warehousing and storage facilities for land transport activities
Autosigma Ltd is a 5-year-old private limited company registered in London, company number 13481423, one of 1,743 machinery repair and installation companies 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 up £1.8M (+76.6%) on the year before, to £4.2M.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- 15 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £4.2M | £83K | £1.5M | 15 | |
| 30 Jun 2024 | £2.4M | £127K | £692K | £5,242 | 15 |
| 30 Jun 2023 | £2.2M | £78K | £554K | £6,837 | 14 |
| 30 Jun 2022 | £1.2M | £13K | £327K | £34K | 8 |
Where Autosigma Ltd is registered
The registered office is in London (N15), in the Haringey local authority area, London. Show N15 4EG on a map.
Other trade companies in N15
- Cleanport Services LtdCleaning companies
- Rozelle Cleaning LtdCleaning companies
- Hunt4Heating LtdPlumbers and heating engineers
- Clean Stitch LtdRepair services
- Watt Rite LtdElectricians
- Did-Fit LimitedPlasterers
- Arvin Cleaning Ltd LtdCleaning companies
- North London Building Control LimitedSpecialist contractors
What happens if Autosigma 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
- 13481423
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 June 2021 (5 years ago)
- Registered office
- 28B Lawrence Road, London, N15 4EG
- Nature of business
- Repair and maintenance of other transport equipment n.e.c. (SIC 33170)
Other passenger land transport (SIC 49390)
Freight transport by road (SIC 49410)
Operation of warehousing and storage facilities for land transport activities (SIC 52103) - Year end
- 30 June (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 24 June 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in London
Other active machinery repair and installation companies registered in London.
- Av Liftco Ltd2019
- Av.Engineering Ltd2023
- Av8 Leather Repair Limited2023
- Avag Electrical Services Ltd2026
- Avia Engineering Ltd2024
- Avia Tech Solutions Ltd2025
- Aviatica Services Ltd2024
- Aviation 26 Ltd2024
All machinery repair and installation companies in London · All trades in London · Machinery repair and installation across the UK
Frequently asked questions
When are Autosigma Ltd's accounts due?
Autosigma 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 Autosigma 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 Autosigma Ltd still trading?
Autosigma 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 Autosigma Ltd do?
Autosigma Ltd is registered under Repair and maintenance of other transport equipment n.e.c. (SIC 33170); Other passenger land transport (SIC 49390); Freight transport by road (SIC 49410); Operation of warehousing and storage facilities for land transport activities (SIC 52103).
How old is Autosigma Ltd?
Autosigma Ltd was incorporated on 28 June 2021, 5 years ago.
What is the penalty if Autosigma 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 Autosigma 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.