- Companies
- Electricians
- Westerham
- Mars Power Limited
Mars Power Limited
- Company number
- 12366621
- Incorporated
- 17 Dec 20196 years trading
- Registered office
- Unit 3, Churchill Court, Hortons Way,, Westerham, TN16 1BT
- Nature of business
- Electrical installation
Mars Power Limited is a 6-year-old private limited company registered in Westerham, company number 12366621, one of 50 electrical contractors in Westerham. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £56K (-51.8%) on the year before, to £52K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £314K against £266K owed within a year: 1.2 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 Dec 2025 | £52K | £183K | £314K | £266K | 0 |
| 31 Dec 2024 | £108K | £155K | £238K | £127K | 2 |
| 31 Dec 2023 | £47K | £50K | £191K | £134K | 2 |
| 31 Dec 2022 | £23K | £63K | £176K | £139K | 2 |
| 31 Dec 2021 | £1,975 | £43K | £96K | £66K | 2 |
| 31 Dec 2020 | £2,452 | £116K | £162K | £117K | 2 |
Where Mars Power Limited is registered
The registered office is in Westerham (TN16), in the Sevenoaks local authority area, South East. Show TN16 1BT on a map.
Other trade companies in TN16
- Fuller & Sons Carpentry LtdProperty developers
- Protech Air Solutions LtdPlumbers and heating engineers
- DW Construction (South) LimitedCivil engineering
- Danvic Facilities & Refurbishment LimitedSpecialist contractors
- The Plumbing Brothers LtdFinishing trades
- Beckenham Driveways and Patios LtdInstallers
- Christmas Tree Farm Outdoors Services LtdLandscapers and gardeners
- Jak Rolling LimitedPainters and decorators
What happens if Mars Power 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 12366621
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 December 2019 (6 years ago)
- Registered office
- Unit 3, Churchill Court, Hortons Way,, Westerham, TN16 1BT
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 2 November 2025
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Westerham
Other active electrical contractors registered in Westerham.
- Minlec Electrical Ltd2015
- Mitchell Lighting Limited2011
- MK Illuminate Ltd2006
- Northway Electrical Services Ltd2005
- Oaklands Fire Ltd2020
- Pro Electrical South East Ltd2019
- R Callow Electrical Ltd2018
- RJS Electrics Ltd2024
All electrical contractors in Westerham · All trades in Westerham · Electricians across the UK
Frequently asked questions
When are Mars Power Limited's accounts due?
Mars Power Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Mars Power Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Mars Power Limited still trading?
Mars Power 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 Mars Power Limited do?
Mars Power Limited is registered under Electrical installation (SIC 43210).
How old is Mars Power Limited?
Mars Power Limited was incorporated on 17 December 2019, 6 years ago.
What is the penalty if Mars Power 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 Mars Power 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.