- Companies
- Groundworks and demolition
- Romford
- O2 Mersini Ltd
O2 Mersini Ltd
- Company number
- 16341377
- Incorporated
- 25 Mar 20251 year trading
- Registered office
- 46 Bridgewater Road, Romford, RM3 7UB
- Nature of business
- Site preparation; Freight transport by road; Other business support service activities n.e.c.
O2 Mersini Ltd is a 1-year-old private limited company registered in Romford, company number 16341377, one of 15 groundworks and demolition companies in Romford. Its next accounts are due at Companies House on 25 December 2026, and its first CT600 is due at HMRC on 24 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 O2 Mersini Ltd is registered
The registered office is in Romford (RM3), in the Havering local authority area, London. Show RM3 7UB on a map.
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What happens if O2 Mersini 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 25 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Dec 2026 to 25 Jan 2027 | £150 |
| 1 to 3 months late | 26 Jan 2027 to 25 Mar 2027 | £375 |
| 3 to 6 months late | 26 Mar 2027 to 25 Jun 2027 | £750 |
| More than 6 months late | From 26 Jun 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
- 16341377
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 March 2025 (1 year ago)
- Registered office
- 46 Bridgewater Road, Romford, RM3 7UB
- Nature of business
- Site preparation (SIC 43120)
Freight transport by road (SIC 49410)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 14 August 2026
Filing notes for groundworks and demolition companies
Groundworks and demolition companies tend to own heavy plant, so capital allowances and hire purchase liabilities show up in both the accounts and the CT600.
Similar companies in Romford
Other active groundworks and demolition companies registered in Romford.
- Petcu Ale Ltd2025
- Pioneer Site Services Limited2015
- TG4 Scaffolding Ltd2020
- Zybis Ltd2018
- Benipal Construction Ltd2026
- Britong UK Limited2021
- Burley Transport Limited1980
- Demolete Ltd2013
All groundworks and demolition companies in Romford · All trades in Romford · Groundworks and demolition across the UK
Frequently asked questions
When are O2 Mersini Ltd's accounts due?
O2 Mersini Ltd's next accounts are due at Companies House by 25 December 2026 (in 73 days), covering the period to 31 March 2026.
When is O2 Mersini 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 24 March 2026, due by 24 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is O2 Mersini Ltd still trading?
O2 Mersini 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 O2 Mersini Ltd do?
O2 Mersini Ltd is registered under Site preparation (SIC 43120); Freight transport by road (SIC 49410); Other business support service activities n.e.c. (SIC 82990).
How old is O2 Mersini Ltd?
O2 Mersini Ltd was incorporated on 25 March 2025, 1 year ago.
What is the penalty if O2 Mersini 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 O2 Mersini 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.