- Companies
- Machinery repair and installation
- Chesterfield
- Seal Team Systems Limited
Seal Team Systems Limited
- Company number
- 05350226
- Incorporated
- 2 Feb 200521 years trading
- Registered office
- Unit 1 Upper Mantle Close, Clay Cross, Chesterfield, Derbyshire, S45 9NU
- Nature of business
- Repair of machinery
Seal Team Systems Limited is a 21-year-old private limited company registered in Chesterfield, company number 05350226, one of 85 machinery repair and installation companies in Chesterfield. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £29K (+18%) on the year before, to £187K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £190K against £101K owed within a year: 1.9 times cover.
- 5 employees on average during the year.
- 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 Jan 2025 | £187K | £190K | £101K | 5 | |
| 31 Jan 2024 | £159K | £136K | £103K | 5 | |
| 31 Jan 2023 | £79K | £124K | £111K | 5 | |
| 31 Jan 2022 | £79K | £120K | £130K | 4 | |
| 31 Jan 2021 | £47K | £116K | £43K | 4 | |
| 31 Jan 2020 | £49K | £55K | £31K | 4 | |
| 31 Jan 2019 | £38K | £46K | £41K | ||
| 31 Jan 2018 | £57K | £80K | £57K | ||
| 31 Jan 2017 | £16K | £53K | £70K | ||
| 31 Jan 2016 | £14K | £62K | £89K |
Where Seal Team Systems Limited is registered
The registered office is in Chesterfield (S45), in the North East Derbyshire local authority area, East Midlands. Show S45 9NU on a map.
Other trade companies in S45
- MD Large & Son LtdCivil engineering
- Shinx Electrical LtdElectricians
- Loxley Automotive Group LtdMotor traders
- James Bevan & Sons Garden & Household Services LtdLandscapers and gardeners
- Stubbs Motor Engineers LimitedMechanics and garages
- MW Window Systems (Residential) LimitedGlaziers
- Autofixblundell LtdMechanics and garages
- C&S Building & Flooring LtdSpecialist contractors
What happens if Seal Team Systems 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 05350226
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 February 2005 (21 years ago)
- Registered office
- Unit 1 Upper Mantle Close, Clay Cross, Chesterfield, Derbyshire, S45 9NU
- Nature of business
- Repair of machinery (SIC 33120)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 23 December 2025
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Chesterfield
Other active machinery repair and installation companies registered in Chesterfield.
- Senior Environmental Monitoring Limited2016
- Short & Son Engineering Ltd2023
- Short Engineering Services Limited2007
- Sspool Ltd2025
- Star Emb Limited2006
- Starling Bus & Coaches Ltd2018
- The Power Service (Chesterfield) Limited2008
- TMD Electrical Limited2022
All machinery repair and installation companies in Chesterfield · All trades in Chesterfield · Machinery repair and installation across the UK
Frequently asked questions
When are Seal Team Systems Limited's accounts due?
Seal Team Systems Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Seal Team Systems Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Seal Team Systems Limited still trading?
Seal Team Systems 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 Team Systems Limited do?
Seal Team Systems Limited is registered under Repair of machinery (SIC 33120).
How old is Seal Team Systems Limited?
Seal Team Systems Limited was incorporated on 2 February 2005, 21 years ago.
What is the penalty if Seal Team Systems 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 Team Systems 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.