- Companies
- Repair services
- Harrow
- Subtechnology Ltd
Subtechnology Ltd
- Company number
- 16570040
- Incorporated
- 8 Jul 20251 year trading
- Registered office
- 124 Courtenay Avenue, Harrow, HA3 6LN
- Nature of business
- Repair of computers and peripheral equipment
Subtechnology Ltd is a 1-year-old private limited company registered in Harrow, company number 16570040, one of 33 repair companies (computers, appliances, furniture and similar) in Harrow. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Subtechnology Ltd is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 6LN on a map.
Other trade companies in HA3
- M&M Team Solutions LimitedCleaning companies
- Asr234 LimitedCivil engineering
- Shine Bright With NV LtdMechanics and garages
- Direct Sparks LtdMachinery repair and installation
- Meral Decoration & Maintenance LtdPainters and decorators
- Add22 LtdCivil engineering
- Floyd Cleaners LimitedCleaning companies
- Amalia&Ioana LimitedBuilders
What happens if Subtechnology 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16570040
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 July 2025 (1 year ago)
- Registered office
- 124 Courtenay Avenue, Harrow, HA3 6LN
- Nature of business
- Repair of computers and peripheral equipment (SIC 95110)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 7 July 2026
Filing notes for repair companies (computers, appliances, furniture and similar)
Repair companies are mostly small micro-entities with simple accounts: parts, tools and a workshop or van.
Similar companies in Harrow
Other active repair companies (computers, appliances, furniture and similar) registered in Harrow.
- Synergy IT Service Limited2012
- The Fold House Ltd2026
- V Soni Ltd2026
- Watch Maxx Ltd2025
- A & F Ltd2006
- Abbey Appliances London Ltd2010
- Able Appliances Limited2015
- Ai. Furniture Assembly Ltd2024
All repair companies (computers, appliances, furniture and similar) in Harrow · All trades in Harrow · Repair services across the UK
Frequently asked questions
When are Subtechnology Ltd's accounts due?
Subtechnology Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Subtechnology Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Subtechnology Ltd still trading?
Subtechnology 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 Subtechnology Ltd do?
Subtechnology Ltd is registered under Repair of computers and peripheral equipment (SIC 95110).
How old is Subtechnology Ltd?
Subtechnology Ltd was incorporated on 8 July 2025, 1 year ago.
What is the penalty if Subtechnology 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 Subtechnology 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.