- Companies
- Installers
- Marlow
- Newtonian Systems Limited
Newtonian Systems Limited
- Company number
- 12011685
- Incorporated
- 22 May 20197 years trading
- Registered office
- 18 York Road, Marlow, SL7 2QB
- Nature of business
- Other construction installation; Other engineering activities
Newtonian Systems Limited is a 7-year-old private limited company registered in Marlow, company number 12011685, one of the UK's installation companies (insulation, lifts, shutters and similar). Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £9,249 (+337.3%) on the year before, to £6,507.
- Current assets of £15K against £56K owed within a year: 0.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £6,507 | £15K | £56K | 1 | |
| 31 May 2024 | -£2,742 | £957 | £59K | 1 | |
| 31 May 2023 | £542 | £37K | £43K | 1 |
Where Newtonian Systems Limited is registered
The registered office is in Marlow (SL7), in the Buckinghamshire local authority area, South East. Show SL7 2QB on a map.
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What happens if Newtonian 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 12011685
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 May 2019 (7 years ago)
- Registered office
- 18 York Road, Marlow, SL7 2QB
- Nature of business
- Other construction installation (SIC 43290)
Other engineering activities (SIC 71129) - Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 21 May 2025
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 Marlow
Other active installation companies (insulation, lifts, shutters and similar) registered in Marlow.
- The Marlow Partnership Limited2018
- Falcon Construction & Management Contractors Ltd2016
- JRB Contractors (London) Ltd2023
All installation companies (insulation, lifts, shutters and similar) in Marlow · All trades in Marlow · Installers across the UK
Frequently asked questions
When are Newtonian Systems Limited's accounts due?
Newtonian Systems Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Newtonian Systems Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Newtonian Systems Limited still trading?
Newtonian Systems Limited is listed as active on the Companies House register (checked 13 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 Newtonian Systems Limited do?
Newtonian Systems Limited is registered under Other construction installation (SIC 43290); Other engineering activities (SIC 71129).
How old is Newtonian Systems Limited?
Newtonian Systems Limited was incorporated on 22 May 2019, 7 years ago.
What is the penalty if Newtonian 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 Newtonian Systems Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.