- Companies
- Machinery repair and installation
- Covent Garden
- Thephotonx Ltd
Thephotonx Ltd
- Company number
- 16155886
- Incorporated
- 30 Dec 20241 year trading
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Repair of electronic and optical equipment; Wholesale of electronic and telecommunications equipment and parts; Retail sale of hardware, paints and glass in specialised stores; Repair of consumer electronics
Thephotonx Ltd is a 1-year-old private limited company registered in Covent Garden, company number 16155886, one of 116 machinery repair and installation companies in Covent Garden. Companies House shows its accounts as overdue: they were due on 30 September 2026.
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.
Is this your company?
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Where Thephotonx Ltd is registered
The registered office is in Covent Garden (WC2H), in the Camden local authority area, London. Show WC2H 9JQ on a map.
Other trade companies in WC2H
- Superclean Agency LtdCleaning companies
- Sal Cleaning LtdCleaning companies
- Cityshine Facilities Services LtdCleaning companies
- Pureoceanscleaning LtdCleaning companies
- Muca Property Group LimitedProperty developers
- E.L.G.G LtdJoiners and carpenters
- First Ascentia Integrated LtdCleaning companies
- Fixing London LtdSpecialist contractors
Shared registered office
4,529 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Thephotonx Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- 16155886
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 December 2024 (1 year ago)
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Repair of electronic and optical equipment (SIC 33130)
Wholesale of electronic and telecommunications equipment and parts (SIC 46520)
Retail sale of hardware, paints and glass in specialised stores (SIC 47520)
Repair of consumer electronics (SIC 95210) - Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 29 December 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 Covent Garden
Other active machinery repair and installation companies registered in Covent Garden.
- Total Aviation Solutions Ltd2025
- Traton Limited2022
- Tricom for Control Systems and Services Ltd2025
- UK Boiler Company Ltd2014
- Vectis HV Engineering Ltd2026
- Victoria Maintenance Services Limited2018
- Weldfab Offshore Ltd2026
- Windwood Yachts Ltd2021
All machinery repair and installation companies in Covent Garden · All trades in Covent Garden · Machinery repair and installation across the UK
Frequently asked questions
When are Thephotonx Ltd's accounts due?
Thephotonx Ltd's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Thephotonx Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 29 December 2025, due by 29 December 2026, and one for the period to 31 December 2025, due by 31 December 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thephotonx Ltd still trading?
Thephotonx Ltd is listed as active on the Companies House register (checked 12 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 Thephotonx Ltd do?
Thephotonx Ltd is registered under Repair of electronic and optical equipment (SIC 33130); Wholesale of electronic and telecommunications equipment and parts (SIC 46520); Retail sale of hardware, paints and glass in specialised stores (SIC 47520); Repair of consumer electronics (SIC 95210).
How old is Thephotonx Ltd?
Thephotonx Ltd was incorporated on 30 December 2024, 1 year ago.
What is the penalty if Thephotonx 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 Thephotonx Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.