- Companies
- Electricians
- Harrow
- Biotech Mechanical Limited
Biotech Mechanical Limited
- Company number
- 14765278
- Incorporated
- 28 Mar 20233 years trading
- Registered office
- Printing House, 66, Lower Road, Harrow, HA2 0DH
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation
Biotech Mechanical Limited is a 3-year-old private limited company registered in Harrow, company number 14765278, one of 200 electrical contractors in Harrow. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 March 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 £1,790 (+2.9%) on the year before, to £64K.
- Current assets of £76K against £12K owed within a year: 6.3 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £64K | £30K | £76K | £12K | 1 |
| 31 Mar 2024 | £62K | £72K | 2 |
Where Biotech Mechanical Limited is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 0DH on a map.
Other trade companies in HA2
- KJP Engineering LtdElectricians
- JNJ Engineering LimitedCivil engineering
- Notting Hill Sew LtdRepair services
- Grandwellautos LtdMotor traders
- Multisteel Powdercoating LtdPainters and decorators
- Neon Systems LtdElectricians
- Firstclass Facilities LtdCleaning companies
- PMD Construct LtdBuilders
Also registered at this address
11 other companies use the same registered office as Biotech Mechanical Limited.
- Align Flooring LtdFloor and wall tilers
- Argyle House Property Development LimitedProperty developers
- BT1 Dev LimitedProperty developers
- HJ Homes LimitedBuilders
- Living Landscapes and Design LimitedLandscapers and gardeners
- MC (Contracting) LimitedProperty developers
- McCabe Builders (London) LtdProperty developers
- Pontiac LimitedProperty developers
- R D J Shutters LtdJoiners and carpenters
- Sheraton Building Projects LimitedProperty developers
- Twiglets Developments LimitedProperty developers
What happens if Biotech Mechanical 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Mar 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Mar 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
- 14765278
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 March 2023 (3 years ago)
- Registered office
- Printing House, 66, Lower Road, Harrow, HA2 0DH
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 27 March 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 Harrow
Other active electrical contractors registered in Harrow.
- Blue Electrical Services Limited2007
- Bluecircuit Tech Ltd2025
- Bluethroat Ltd2026
- Bourneside Electrical Services Ltd2019
- C & A Electrical Services Ltd2008
- Cabos Electrical Limited2026
- Camden Cables Ltd2023
- CC Sourcing & Services Limited2021
All electrical contractors in Harrow · All trades in Harrow · Electricians across the UK
Frequently asked questions
When are Biotech Mechanical Limited's accounts due?
Biotech Mechanical Limited's next accounts are due at Companies House by 30 December 2026 (in 79 days), covering the period to 30 March 2026.
When is Biotech Mechanical Limited's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Biotech Mechanical Limited still trading?
Biotech Mechanical 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 Biotech Mechanical Limited do?
Biotech Mechanical Limited is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Biotech Mechanical Limited?
Biotech Mechanical Limited was incorporated on 28 March 2023, 3 years ago.
What is the penalty if Biotech Mechanical 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 Biotech Mechanical 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.