- Companies
- Civil engineering
- Frinton-on-Sea
- RTT Consulting Ltd
RTT Consulting Ltd
- Company number
- 16207858
- Incorporated
- 25 Jan 20251 year trading
- Registered office
- 21 Easton Way, Frinton-on-Sea, CO13 9NU
- Nature of business
- Construction of bridges and tunnels
RTT Consulting Ltd is a 1-year-old private limited company registered in Frinton-on-Sea, company number 16207858, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 25 October 2026, and its first CT600 is due at HMRC on 24 January 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.
Is this your company?
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Where RTT Consulting Ltd is registered
The registered office is in Frinton-on-Sea (CO13), in the Tendring local authority area, East of England. Show CO13 9NU on a map.
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What happens if RTT Consulting 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Oct 2026 to 25 Nov 2026 | £150 |
| 1 to 3 months late | 26 Nov 2026 to 25 Jan 2027 | £375 |
| 3 to 6 months late | 26 Jan 2027 to 25 Apr 2027 | £750 |
| More than 6 months late | From 26 Apr 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
- 16207858
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 January 2025 (1 year ago)
- Registered office
- 21 Easton Way, Frinton-on-Sea, CO13 9NU
- Nature of business
- Construction of bridges and tunnels (SIC 42130)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 24 January 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Frinton-on-Sea
Other active civil engineering contractors registered in Frinton-on-Sea.
All civil engineering contractors in Frinton-on-Sea · All trades in Frinton-on-Sea · Civil engineering across the UK
Frequently asked questions
When are RTT Consulting Ltd's accounts due?
RTT Consulting Ltd's next accounts are due at Companies House by 25 October 2026 (in 12 days), covering the period to 31 March 2026.
When is RTT Consulting 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 January 2026, due by 24 January 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 RTT Consulting Ltd still trading?
RTT Consulting 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 RTT Consulting Ltd do?
RTT Consulting Ltd is registered under Construction of bridges and tunnels (SIC 42130).
How old is RTT Consulting Ltd?
RTT Consulting Ltd was incorporated on 25 January 2025, 1 year ago.
What is the penalty if RTT Consulting 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 RTT Consulting 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.