- Companies
- Installers
- Chester le Street
- Seal Tech Northeast Limited
Seal Tech Northeast Limited
- Company number
- 16869341
- Incorporated
- 22 Nov 2025
- Registered office
- 20 Malvern Avenue, Chester le Street, DH2 3BH
- Nature of business
- Other construction installation
Seal Tech Northeast Limited is a newly incorporated private limited company registered in Chester le Street, company number 16869341, one of 16 installation companies (insulation, lifts, shutters and similar) in Chester le Street. Its next accounts are due at Companies House on 22 August 2027, and its first CT600 is due at HMRC on 21 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 Seal Tech Northeast Limited is registered
The registered office is in Chester le Street (DH2), in the County Durham local authority area, North East. Show DH2 3BH on a map.
Other trade companies in DH2
- RVB Services LtdScaffolders
- Northeast Tyres 247 LimitedMechanics and garages
- I J Installations LtdElectricians
- SD Industrial Cleaning LtdCleaning companies
- A1 Elevate Roofing LtdRoofers
- TPM Electrical LtdElectricians
- CLS Home Improvements LtdFinishing trades
- Northlands Camper Company LimitedMotor traders
Also registered at this address
1 other company uses the same registered office as Seal Tech Northeast Limited.
- Instaclean Solutions LimitedCleaning companies
What happens if Seal Tech Northeast Limited 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 22 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Aug 2027 to 22 Sep 2027 | £150 |
| 1 to 3 months late | 23 Sep 2027 to 22 Nov 2027 | £375 |
| 3 to 6 months late | 23 Nov 2027 to 22 Feb 2028 | £750 |
| More than 6 months late | From 23 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
- 16869341
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 November 2025
- Registered office
- 20 Malvern Avenue, Chester le Street, DH2 3BH
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Chester le Street
Other active installation companies (insulation, lifts, shutters and similar) registered in Chester le Street.
- Tulipalo Exceptional Fires Ltd2019
- Tyneside Building and Joinery Ltd2017
- A Dickinson Co Ltd2024
- Alu-Tek Ltd2021
- Cannon North East Limited2023
- Clear Water Flow Limited2022
- Cowells Construction Ltd2024
- Eco-One Insulation Ltd2022
All installation companies (insulation, lifts, shutters and similar) in Chester le Street · All trades in Chester le Street · Installers across the UK
Frequently asked questions
When are Seal Tech Northeast Limited's accounts due?
Seal Tech Northeast Limited's next accounts are due at Companies House by 22 August 2027 (in 313 days), covering the period to 30 November 2026.
When is Seal Tech Northeast Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 21 November 2026, due by 21 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 Seal Tech Northeast Limited still trading?
Seal Tech Northeast Limited 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 Seal Tech Northeast Limited do?
Seal Tech Northeast Limited is registered under Other construction installation (SIC 43290).
How old is Seal Tech Northeast Limited?
Seal Tech Northeast Limited was incorporated on 22 November 2025, less than a year ago.
What is the penalty if Seal Tech Northeast Limited 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 Seal Tech Northeast Limited 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.