- Companies
- Electricians
- Lymington
- Sarnia Installations Ltd
Sarnia Installations Ltd
- Company number
- 11744565
- Incorporated
- 31 Dec 20187 years trading
- Registered office
- 8 the Ostlers, Hordle, Lymington, SO41 0FT
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Joinery installation
Sarnia Installations Ltd is a 7-year-old private limited company registered in Lymington, company number 11744565, one of 14 electrical contractors in Lymington. 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 £93 (-39.2%) on the year before, to £144.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £76K against £83K owed within a year: 0.9 times cover.
- 3 employees on average, up from 2 the year before.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £144 | £76K | £83K | 3 | |
| 31 Dec 2024 | £237 | £50K | £58K | 2 | |
| 31 Dec 2023 | £396 | £44K | £45K | 1 | |
| 31 Dec 2022 | £676 | £48K | £39K | 1 | |
| 31 Dec 2021 | £949 | £31K | £11K | 1 | |
| 31 Dec 2020 | £203 | £35K | £8,528 | 1 | |
| 31 Dec 2019 | £239 | £24K | £35K | 1 |
Where Sarnia Installations Ltd is registered
The registered office is in Lymington (SO41), in the New Forest local authority area, South East. Show SO41 0FT on a map.
Other trade companies in SO41
- Romero Construction LtdBuilders
- Sea Glass Zero LimitedLandscapers and gardeners
- Vincent's Auto Repairs LtdMechanics and garages
- Buckland Homes LtdProperty developers
- Deep Blue Navigation LtdElectricians
- Tyre Brothers LtdMechanics and garages
- Bull Cleaning Solutions LtdCleaning companies
- Harbour & House LtdProperty developers
What happens if Sarnia Installations 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 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
- 11744565
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 December 2018 (7 years ago)
- Registered office
- 8 the Ostlers, Hordle, Lymington, SO41 0FT
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Joinery installation (SIC 43320) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 28 May 2026
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 Lymington
Other active electrical contractors registered in Lymington.
- Shorts Electrical Contractors Limited1998
- Wellworthy Electrical Contractors Ltd2025
- B Assured Ltd2024
- Deep Blue Navigation Ltd2026
- Dibben Electrical Contractors Limited2011
- Dlec Electrical Contractors Ltd2013
- Fairlight Installations Ltd2014
- Odic Security Ltd2025
All electrical contractors in Lymington · All trades in Lymington · Electricians across the UK
Frequently asked questions
When are Sarnia Installations Ltd's accounts due?
Sarnia Installations Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Sarnia Installations Ltd'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 Sarnia Installations Ltd still trading?
Sarnia Installations 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 Sarnia Installations Ltd do?
Sarnia Installations Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Joinery installation (SIC 43320).
How old is Sarnia Installations Ltd?
Sarnia Installations Ltd was incorporated on 31 December 2018, 7 years ago.
What is the penalty if Sarnia Installations 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 Sarnia Installations 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.