- Companies
- Machinery repair and installation
- London
- SDDL Services Ltd
SDDL Services Ltd
- Company number
- 16875393
- Incorporated
- 26 Nov 2025
- Registered office
- 24 Portland Road, London, N15 4RW
- Nature of business
- Repair of electrical equipment; Electrical installation
SDDL Services Ltd is a newly incorporated private limited company registered in London, company number 16875393, one of 1,743 machinery repair and installation companies in London. Its next accounts are due at Companies House on 26 August 2027, and its first CT600 is due at HMRC on 25 November 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 SDDL Services Ltd is registered
The registered office is in London (N15), in the Haringey local authority area, London. Show N15 4RW on a map.
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- Rozelle Cleaning LtdCleaning companies
- Hunt4Heating LtdPlumbers and heating engineers
- Clean Stitch LtdRepair services
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- Did-Fit LimitedPlasterers
- Arvin Cleaning Ltd LtdCleaning companies
- North London Building Control LimitedSpecialist contractors
What happens if SDDL Services 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 26 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 27 Aug 2027 to 26 Sep 2027 | £150 |
| 1 to 3 months late | 27 Sep 2027 to 26 Nov 2027 | £375 |
| 3 to 6 months late | 27 Nov 2027 to 26 Feb 2028 | £750 |
| More than 6 months late | From 27 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 16875393
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 November 2025
- Registered office
- 24 Portland Road, London, N15 4RW
- Nature of business
- Repair of electrical equipment (SIC 33140)
Electrical installation (SIC 43210) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
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 London
Other active machinery repair and installation companies registered in London.
- SDR Marine Services Ltd2026
- SDT North East Ltd2013
- Se Global Investments Ltd2026
- Seaa Energy Ltd2026
- Seadag Companies Group Ltd2016
- Seafleetbackbone Ltd2025
- Seamless Repairs Ltd2023
- Sean Kelly Lubrications Limited2008
All machinery repair and installation companies in London · All trades in London · Machinery repair and installation across the UK
Frequently asked questions
When are SDDL Services Ltd's accounts due?
SDDL Services Ltd's next accounts are due at Companies House by 26 August 2027 (in 318 days), covering the period to 30 November 2026.
When is SDDL Services 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 25 November 2026, due by 25 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SDDL Services Ltd still trading?
SDDL Services 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 SDDL Services Ltd do?
SDDL Services Ltd is registered under Repair of electrical equipment (SIC 33140); Electrical installation (SIC 43210).
How old is SDDL Services Ltd?
SDDL Services Ltd was incorporated on 26 November 2025, less than a year ago.
What is the penalty if SDDL Services 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 SDDL Services 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.