- Companies
- Machinery repair and installation
- Royston
- C & O Aero Ltd
C & O Aero Ltd
- Company number
- 10374360
- Incorporated
- 14 Sep 201610 years trading
- Registered office
- Unit 10 Bell Farm Industrial Park, Nuthampstead, Royston, Hertfordshire, SG8 8ND
- Nature of business
- Repair and maintenance of aircraft and spacecraft
C & O Aero Ltd is a 10-year-old private limited company registered in Royston, company number 10374360, one of 25 machinery repair and installation companies in Royston. Its next accounts are due at Companies House on 29 June 2027, and the CT600 for the period to 29 September 2026 is due at HMRC on 29 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 up £708 (+442.5%) on the year before, to £868.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £7,937 against £7,069 owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £868 | £7,937 | £7,069 | 1 | |
| 30 Sep 2024 | £160 | £3,389 | £2,149 | 1 | |
| 30 Sep 2023 | £0 | £1,563 | £3 | 1 | |
| 30 Sep 2022 | £313 | £28K | £26K | -1 | |
| 30 Sep 2021 | £313 | £13K | £12K | -1 | |
| 30 Sep 2020 | £224 | £13K | £13K | 1 | |
| 30 Sep 2019 | £55 | £9,156 | £9,101 | 1 | |
| 30 Sep 2018 | £15 | £4,852 | £4,837 | 1 | |
| 30 Sep 2017 | £100 | £2,372 | £2,272 |
Who runs and owns C & O Aero Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| G*** R*** | Director | Sep 2016 |
Person with significant control
Where C & O Aero Ltd is registered
The registered office is in Royston (SG8), in the North Hertfordshire local authority area, East of England. Show SG8 8ND on a map.
Other trade companies in SG8
- MPC Cars LtdMechanics and garages
- CB Composite LtdMachinery repair and installation
- Energy 0 (Zero) LimitedProperty developers
- Common Lane LtdProperty developers
- Florina Claudia Motorsport LtdMechanics and garages
- Honeycomp LtdMachinery repair and installation
- All-Good Aviation LtdMachinery repair and installation
- Acb LtdBuilders
Also registered at this address
13 other companies use the same registered office as C & O Aero Ltd.
- All-Good Aviation LtdMachinery repair and installation
- B Deakin Composites LtdMachinery repair and installation
- CB Composite LtdMachinery repair and installation
- Cristian Lavinia LtdMechanics and garages
- D Savage Aviation LtdMachinery repair and installation
- Eusebiu Composites LtdMachinery repair and installation
- Florina Claudia Motorsport LtdMechanics and garages
- Gda Composites LtdMechanics and garages
- Honeycomp LtdMachinery repair and installation
- Kiana Composite LtdMachinery repair and installation
- Mocanu Robert LtdMachinery repair and installation
- Ramp 1 Aviation LtdMachinery repair and installation
- Weldferox LtdMechanics and garages
What happens if C & O Aero 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 29 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Jun 2027 to 29 Jul 2027 | £150 |
| 1 to 3 months late | 30 Jul 2027 to 29 Sep 2027 | £375 |
| 3 to 6 months late | 30 Sep 2027 to 29 Dec 2027 | £750 |
| More than 6 months late | From 30 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Sep 2027 | £200 |
| 3 months late | 29 Dec 2027 | another £200 |
| 6 months late | 29 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 10374360
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 September 2016 (10 years ago)
- Registered office
- Unit 10 Bell Farm Industrial Park, Nuthampstead, Royston, Hertfordshire, SG8 8ND
- Nature of business
- Repair and maintenance of aircraft and spacecraft (SIC 33160)
- Year end
- 29 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 3 September 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 Royston
Other active machinery repair and installation companies registered in Royston.
- CB Composite Ltd2026
- Chalfont Refrigeration Services Limited2003
- Ciprian 85 Ltd2025
- Cobalt Fabrications Limited2024
- D Savage Aviation Ltd2017
- Duncan Electrical Limited2022
- Eusebiu Composites Ltd2026
- Ever Ready Engineering Ltd2026
All machinery repair and installation companies in Royston · All trades in Royston · Machinery repair and installation across the UK
Frequently asked questions
When are C & O Aero Ltd's accounts due?
C & O Aero Ltd's next accounts are due at Companies House by 29 June 2027 (in 259 days), covering the period to 29 September 2026.
When is C & O Aero Ltd's CT600 due?
The CT600 for the period to 29 September 2026 is due at HMRC by 29 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 June 2027.
Is C & O Aero Ltd still trading?
C & O Aero 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 C & O Aero Ltd do?
C & O Aero Ltd is registered under Repair and maintenance of aircraft and spacecraft (SIC 33160).
How old is C & O Aero Ltd?
C & O Aero Ltd was incorporated on 14 September 2016, 10 years ago.
Who runs C & O Aero Ltd?
C & O Aero Ltd has 1 active director, the longest-serving appointed in Sep 2016. Their names and service addresses are on the Companies House register.
Who owns C & O Aero Ltd?
One person or company has significant control of C & O Aero Ltd: an individual (owns 75% or more of the shares).
What is the penalty if C & O Aero 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 C & O Aero 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.