- Companies
- Installers
- Northallerton
- Seal Fire & Airsealing Solutions Ltd
Seal Fire & Airsealing Solutions Ltd
- Company number
- 11747425
- Incorporated
- 3 Jan 20197 years trading
- Registered office
- Trinity House, Thurston Road, Northallerton, DL6 2NA
- Nature of business
- Other construction installation; Other specialised construction activities n.e.c.
Seal Fire & Airsealing Solutions Ltd is a 7-year-old private limited company registered in Northallerton, company number 11747425, one of 8 installation companies (insulation, lifts, shutters and similar) in Northallerton. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £135K (+27.2%) on the year before, to £630K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £1M against £388K owed within a year: 2.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £630K | £658K | £1M | £388K | 0 |
| 31 Mar 2024 | £495K | £435K | £584K | £73K | 1 |
| 31 Mar 2023 | £414K | £632K | £191K | 1 | |
| 31 Mar 2022 | £194K | £324K | £90K | 1 | |
| 31 Mar 2021 | £109K | £178K | £20K | 1 | |
| 31 Mar 2020 | £111K | £274K | £161K | 1 |
Who runs and owns Seal Fire & Airsealing Solutions Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| J*** H*** | Director | Jan 2019 |
| M*** N*** | Director | Jan 2019 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| M*** N*** | Secretary | Jan 2019 | Jan 2019 |
People with significant control (2)
Charges (secured borrowing)
All 1 registered charge has been satisfied. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Bibby Financial Services Limited (As Security Trustee) | Satisfied Dec 2020 | Oct 2019 |
Where Seal Fire & Airsealing Solutions Ltd is registered
The registered office is in Northallerton (DL6), in the North Yorkshire local authority area, Yorkshire and The Humber. Show DL6 2NA on a map.
Other trade companies in DL6
- Matthew Baker Plumbing Heating & Bathrooms LtdPlumbers and heating engineers
- Dales Property Projects LtdProperty developers
- Lambourne Machinery Solutions LtdMachinery repair and installation
- Alan Badger LtdPlumbers and heating engineers
- MW Contracting Yorkshire LtdMechanics and garages
- North Bloom LtdLandscapers and gardeners
- Dobson Auto Repairs LtdMechanics and garages
- Brompton MOT Centre LtdMechanics and garages
Also registered at this address
6 other companies use the same registered office as Seal Fire & Airsealing Solutions Ltd.
- Carlton Motor Co (North East) LimitedMotor traders
- Dales Property Projects LtdProperty developers
- Mark Wilkinson Joinery LimitedJoiners and carpenters
- PD Smith Site Services LimitedCivil engineering
- Richmond Roofing LimitedRoofers
- Triumph Properties (North Yorkshire) LimitedProperty developers
What happens if Seal Fire & Airsealing Solutions 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 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
- 11747425
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 January 2019 (7 years ago)
- Registered office
- Trinity House, Thurston Road, Northallerton, DL6 2NA
- Nature of business
- Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 January 2026
- Charges (mortgages)
- 0 outstanding of 1 registered
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 Northallerton
Other active installation companies (insulation, lifts, shutters and similar) registered in Northallerton.
- Warm Room Solutions Ltd2026
- C S Process Contractor Limited2015
- Chris Penketh Associates Limited1993
- Duoserve Ltd2020
- K B B Home Installations Ltd2015
- Millennium Window Systems Ltd2016
- Reloft U.K. Limited2019
All installation companies (insulation, lifts, shutters and similar) in Northallerton · All trades in Northallerton · Installers across the UK
Frequently asked questions
When are Seal Fire & Airsealing Solutions Ltd's accounts due?
Seal Fire & Airsealing Solutions Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Seal Fire & Airsealing Solutions Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Seal Fire & Airsealing Solutions Ltd still trading?
Seal Fire & Airsealing Solutions 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 Seal Fire & Airsealing Solutions Ltd do?
Seal Fire & Airsealing Solutions Ltd is registered under Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999).
How old is Seal Fire & Airsealing Solutions Ltd?
Seal Fire & Airsealing Solutions Ltd was incorporated on 3 January 2019, 7 years ago.
Who runs Seal Fire & Airsealing Solutions Ltd?
Seal Fire & Airsealing Solutions Ltd has 2 active directors, the longest-serving appointed in Jan 2019. Their names and service addresses are on the Companies House register.
Who owns Seal Fire & Airsealing Solutions Ltd?
2 people or companies have significant control of Seal Fire & Airsealing Solutions Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Seal Fire & Airsealing Solutions 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 Seal Fire & Airsealing Solutions 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.