- Company number
- 16587522
- Incorporated
- 16 Jul 20251 year trading
- Registered office
- 186 Ardgowan Road, London, SE6 1XA
- Nature of business
- Construction of domestic buildings
Dolx Ltd is a 1-year-old private limited company registered in London, company number 16587522, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 16 April 2027, and its first CT600 is due at HMRC on 15 July 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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Who runs and owns Dolx Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| D*** O*** | Director | Jul 2025 |
Person with significant control
Where Dolx Ltd is registered
The registered office is in London (SE6), in the Lewisham local authority area, London. Show SE6 1XA on a map.
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What happens if Dolx 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 16 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 17 Apr 2027 to 16 May 2027 | £150 |
| 1 to 3 months late | 17 May 2027 to 16 Jul 2027 | £375 |
| 3 to 6 months late | 17 Jul 2027 to 16 Oct 2027 | £750 |
| More than 6 months late | From 17 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16587522
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 July 2025 (1 year ago)
- Registered office
- 186 Ardgowan Road, London, SE6 1XA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Doma Build Contractors Ltd2021
- Dombuilders Ltd2015
- Domby Limited2019
- Domens Construction Ltd2021
- Domestic Lofts and Extensions Ltd2026
- Domi BFB Ltd2026
- Domi Builders Ltd2015
- Domi London Construction Ltd2023
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Dolx Ltd's accounts due?
Dolx Ltd's next accounts are due at Companies House by 16 April 2027 (in 186 days), covering the period to 31 July 2026.
When is Dolx 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 15 July 2026, due by 15 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Dolx Ltd still trading?
Dolx 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 Dolx Ltd do?
Dolx Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Dolx Ltd?
Dolx Ltd was incorporated on 16 July 2025, 1 year ago.
Who runs Dolx Ltd?
Dolx Ltd has 1 active director, the longest-serving appointed in Jul 2025. Their names and service addresses are on the Companies House register.
Who owns Dolx Ltd?
One person or company has significant control of Dolx Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Dolx 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 Dolx 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.