- Companies
- Specialist contractors
- London
- Sik Group Ltd
Sik Group Ltd
- Company number
- 16885523
- Incorporated
- 2 Dec 2025
- Registered office
- 3RD Floor, 86-90, Paul Street, London, England, EC2A 4NE
- Nature of business
- Other specialised construction activities n.e.c.
Sik Group Ltd is a newly incorporated private limited company registered in London, company number 16885523, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 2 September 2027, and its first CT600 is due at HMRC on 1 December 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 Sik Group Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NE on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
1,581 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 Sik Group 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 2 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 3 Sep 2027 to 2 Oct 2027 | £150 |
| 1 to 3 months late | 3 Oct 2027 to 2 Dec 2027 | £375 |
| 3 to 6 months late | 3 Dec 2027 to 2 Mar 2028 | £750 |
| More than 6 months late | From 3 Mar 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
- 16885523
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 December 2025
- Registered office
- 3RD Floor, 86-90, Paul Street, London, England, EC2A 4NE
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Siko (UK) Limited2014
- Sil Builder Limited2026
- Silk Route Import & Export Ltd2021
- Silkstone Construction Ltd2025
- Silrum Ltd2022
- Silver Design Ltd2021
- Silvercrest Group Holdings (UK) Ltd2009
- Silvmarc Ltd2023
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Sik Group Ltd's accounts due?
Sik Group Ltd's next accounts are due at Companies House by 2 September 2027 (in 324 days), covering the period to 31 December 2026.
When is Sik Group 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 1 December 2026, due by 1 December 2027, and one for the period to 31 December 2026, due by 31 December 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sik Group Ltd still trading?
Sik Group 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 Sik Group Ltd do?
Sik Group Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sik Group Ltd?
Sik Group Ltd was incorporated on 2 December 2025, less than a year ago.
What is the penalty if Sik Group 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 Sik Group 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.