- Company number
- 12000553
- Incorporated
- 16 May 20197 years trading
- Registered office
- 91 Crowshott Avenue, Stanmore, London, HA7 2PA
- Nature of business
- Construction of domestic buildings; Retail sale via mail order houses or via Internet
Optima Retrofit Solutions Ltd is a 7-year-old private limited company registered in Stanmore, company number 12000553, one of 198 building contractors in Stanmore. 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 down £2,000 (-33.3%) on the year before, to £4,000.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- 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 May 2025 | £4,000 | £0 | £1,000 | 0 | |
| 31 May 2024 | £6,000 | £1,000 | £0 | 0 | |
| 31 May 2023 | £7,000 | £1,000 | £0 | 0 | |
| 31 May 2022 | £6,000 | £1,000 | £0 | 0 | |
| 31 May 2021 | £3,500 | £500 | £0 | 0 | |
| 31 May 2020 | £1,000 |
Where Optima Retrofit Solutions Ltd is registered
The registered office is in Stanmore (HA7), in the Harrow local authority area, London. Show HA7 2PA on a map.
Other trade companies in HA7
- Vatra Developments LtdBuilders
- Air and Waves LtdPlumbers and heating engineers
- R & R Building Services LtdFinishing trades
- Berculean BBV Ltd LtdBuilders
- Velorent LtdMotor traders
- Autex LtdMechanics and garages
- TH Motorcycles LtdMotor traders
- Ady Painting and Decorating LtdInstallers
What happens if Optima Retrofit Solutions 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 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
- 12000553
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 May 2019 (7 years ago)
- Registered office
- 91 Crowshott Avenue, Stanmore, London, HA7 2PA
- Nature of business
- Construction of domestic buildings (SIC 41202)
Retail sale via mail order houses or via Internet (SIC 47910) - Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 12 May 2026
- Previous names
- Alfa7 Logistics Limited (until 21 Sep 2021)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Stanmore
Other active building contractors registered in Stanmore.
- Opus Design and Build Limited2023
- Paros Consulting Ltd2019
- Patel Builds Limited2025
- PJ Pro Services Ltd2020
- Plug & Socket Services Ltd2025
- PMH Surface Co Ltd2025
- PNP Contractors Ltd2019
- Pyp2 Ltd2025
All building contractors in Stanmore · All trades in Stanmore · Builders across the UK
Frequently asked questions
When are Optima Retrofit Solutions Ltd's accounts due?
Optima Retrofit Solutions Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Optima Retrofit Solutions Ltd'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 Optima Retrofit Solutions Ltd still trading?
Optima Retrofit Solutions 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 Optima Retrofit Solutions Ltd do?
Optima Retrofit Solutions Ltd is registered under Construction of domestic buildings (SIC 41202); Retail sale via mail order houses or via Internet (SIC 47910).
How old is Optima Retrofit Solutions Ltd?
Optima Retrofit Solutions Ltd was incorporated on 16 May 2019, 7 years ago.
What is the penalty if Optima Retrofit Solutions 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 Optima Retrofit Solutions 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.