Argon Ltd
- Company number
- 16137693
- Incorporated
- 16 Dec 20241 year trading
- Registered office
- 130 Wilbury Road, Letchworth Garden City, SG6 4JG
- Nature of business
- Repair and maintenance of aircraft and spacecraft; Agents involved in the sale of machinery, industrial equipment, ships and aircraft
Argon Ltd is a 1-year-old private limited company registered in Letchworth Garden City, company number 16137693, one of 13 machinery repair and installation companies in Letchworth Garden City. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 December 2025, as filed at Companies House.
Where Argon Ltd is registered
The registered office is in Letchworth Garden City (SG6), in the North Hertfordshire local authority area, East of England. Show SG6 4JG on a map.
Other trade companies in SG6
- Combined Auto Services LimitedMotor traders
- G.O.A.L Energy Services LtdElectricians
- Bedmond Construction LtdProperty developers
- Barski Property Care LtdBuilders
- PK Construction and Stones LimitedBuilders
- McCormack Maintenance LtdCivil engineering
- Nitdas Cleaning Solution LtdCleaning companies
- Nbtotalproperty LtdLandscapers and gardeners
What happens if Argon 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16137693
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 December 2024 (1 year ago)
- Registered office
- 130 Wilbury Road, Letchworth Garden City, SG6 4JG
- Nature of business
- Repair and maintenance of aircraft and spacecraft (SIC 33160)
Agents involved in the sale of machinery, industrial equipment, ships and aircraft (SIC 46140) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 6 October 2025
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 Letchworth Garden City
Other active machinery repair and installation companies registered in Letchworth Garden City.
- De Manincor UK Limited2011
- Fettle Bike Repair Ltd2019
- Gatmerk Ltd2025
- GW Lifts Limited2022
- Hertford Television Service Limited2013
- Parker Aviation Ltd2025
- Pascut Limited2017
- Pavetesting Limited2003
All machinery repair and installation companies in Letchworth Garden City · All trades in Letchworth Garden City · Machinery repair and installation across the UK
Frequently asked questions
When are Argon Ltd's accounts due?
Argon Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Argon Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Argon Ltd still trading?
Argon 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 Argon Ltd do?
Argon Ltd is registered under Repair and maintenance of aircraft and spacecraft (SIC 33160); Agents involved in the sale of machinery, industrial equipment, ships and aircraft (SIC 46140).
How old is Argon Ltd?
Argon Ltd was incorporated on 16 December 2024, 1 year ago.
What is the penalty if Argon 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 Argon 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.