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- Seej Engineering Ltd
Company profile · Specialist contractors
Seej Engineering Ltd
Seej Engineering Ltd is a newly incorporated private limited company registered in Washington, company number 16784791, one of 23 specialist construction companies in Washington. Its next accounts are due at Companies House on 14 July 2027, and its first CT600 is due at HMRC on 13 October 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 Seej Engineering Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| J*** L*** | Director | Oct 2025 |
Person with significant control
Where Seej Engineering Ltd is registered
The registered office is in Washington (NE38), in the Sunderland local authority area, North East. Show NE38 0AJ on a map.
Other trade companies in NE38
- Rewop Power LimitedElectricians
- G Rock Services LtdProperty developers
- Shaws Property Services (Ne) LtdFinishing trades
- Swan Bodyshop and Service Centre LtdMechanics and garages
- Summit Roofing and Building Solutions North East LimitedRoofers
- Northeast Air Conditioning Services LtdPlumbers and heating engineers
- Er Highway Services LimitedCivil engineering
- JDCS Group LtdFinishing trades
What happens if Seej Engineering 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 14 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Jul 2027 to 14 Aug 2027 | £150 |
| 1 to 3 months late | 15 Aug 2027 to 14 Oct 2027 | £375 |
| 3 to 6 months late | 15 Oct 2027 to 14 Jan 2028 | £750 |
| More than 6 months late | From 15 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16784791
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 October 2025
- Registered office
- 20 Waxwing, Washington, NE38 0AJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Other engineering activities (SIC 71129) - Year end
- 31 October (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 Washington
Other active specialist construction companies registered in Washington.
- Shevlin's Commercial Maintenance Limited2025
- Skyline Loft Conversions (Ne) Limited2007
- Steel Frame Builders Ltd2024
- T. Golden Limited2007
- Triton Design & Support Limited2020
- Trustguard Ltd2012
- A&C Property Care Ltd2026
- Advanced Lighting Technology Limited2020
All specialist construction companies in Washington · All trades in Washington · Specialist contractors across the UK
Frequently asked questions
When are Seej Engineering Ltd's accounts due?
Seej Engineering Ltd's next accounts are due at Companies House by 14 July 2027 (in 275 days), covering the period to 31 October 2026.
When is Seej Engineering 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 13 October 2026, due by 13 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Seej Engineering Ltd still trading?
Seej Engineering 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 Seej Engineering Ltd do?
Seej Engineering Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Other engineering activities (SIC 71129).
How old is Seej Engineering Ltd?
Seej Engineering Ltd was incorporated on 14 October 2025, less than a year ago.
Who runs Seej Engineering Ltd?
Seej Engineering Ltd has 1 active director, the longest-serving appointed in Oct 2025. Their names and service addresses are on the Companies House register.
Who owns Seej Engineering Ltd?
One person or company has significant control of Seej Engineering Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Seej Engineering 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 Seej Engineering 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.