- Companies
- Groundworks and demolition
- Brentwood
- Sealtec Services Limited
Sealtec Services Limited
- Company number
- 09834915
- Incorporated
- 21 Oct 201510 years trading
- Registered office
- 157 Hatch Road, Pilgrims Hatch, Brentwood, CM15 9QB
- Nature of business
- Site preparation
Sealtec Services Limited is a 10-year-old private limited company registered in Brentwood, company number 09834915, one of 9 groundworks and demolition companies in Brentwood. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 down £23K (-40.1%) on the year before, to £34K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- 2 employees on average, up from 0 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £34K | £18K | 2 | ||
| 31 Oct 2024 | £57K | £0 | £42K | £17K | 0 |
| 31 Oct 2023 | £84K | £35K | £71K | £19K | 0 |
| 31 Oct 2022 | £73K | £30K | £100K | £14K | 0 |
| 31 Oct 2021 | £52K | £14K | £87K | £18K | 0 |
| 31 Oct 2020 | £16K | £19K | £43K | £9,442 | 0 |
| 31 Oct 2019 | £14K | £9,615 | £32K | £20K | 0 |
| 31 Oct 2018 | £2,080 | £8,014 | £17K | £17K | 0 |
| 31 Oct 2017 | £1,206 | £11K | £14K | £16K | 0 |
| 31 Oct 2016 | £806 | £25K | £30K | £24K |
Where Sealtec Services Limited is registered
The registered office is in Brentwood (CM15), in the Brentwood local authority area, East of England. Show CM15 9QB on a map.
Other trade companies in CM15
- JJ Freeman Construction LtdGroundworks and demolition
- Sky Loft London LtdFinishing trades
- LDN Systems LtdRoofers
- LDN Traditional Roofing LtdRoofers
- Reactive Roofers LtdRoofers
- K.Fire.Safety LtdElectricians
- Elevation Roofing Group LimitedRoofers
- Krosshatch Creative Concepts LimitedProperty developers
What happens if Sealtec Services 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 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
- 09834915
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 October 2015 (10 years ago)
- Registered office
- 157 Hatch Road, Pilgrims Hatch, Brentwood, CM15 9QB
- Nature of business
- Site preparation (SIC 43120)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 16 February 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 Brentwood
Other active groundworks and demolition companies registered in Brentwood.
- Sherbourne Groundworks Ltd2019
- Suc. Exc. UK. Ltd2009
- TRN Demolition Services Limited2024
- 1ST Response Demolition Limited2025
- A2O Site Services Limited2015
- CJ Demo Ltd2025
- Ingness Facilities Management Ltd2026
- JJ Freeman Construction Ltd2026
All groundworks and demolition companies in Brentwood · All trades in Brentwood · Groundworks and demolition across the UK
Frequently asked questions
When are Sealtec Services Limited's accounts due?
Sealtec Services Limited's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Sealtec Services Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Sealtec Services Limited still trading?
Sealtec Services 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 Sealtec Services Limited do?
Sealtec Services Limited is registered under Site preparation (SIC 43120).
How old is Sealtec Services Limited?
Sealtec Services Limited was incorporated on 21 October 2015, 10 years ago.
What is the penalty if Sealtec Services 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 Sealtec Services 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.