- Companies
- Machinery repair and installation
- Birmingham
- Sinewaves Electricals Ltd
Sinewaves Electricals Ltd
- Company number
- 09270405
- Incorporated
- 20 Oct 201411 years trading
- Registered office
- Unit 2, Lime Grove Industrial Estate Lime Grove, Balsall Heath, Birmingham, B12 8SY
- Nature of business
- Repair of electrical equipment
Sinewaves Electricals Ltd is a 11-year-old private limited company registered in Birmingham, company number 09270405, one of 291 machinery repair and installation companies in Birmingham. Its next accounts are due at Companies House on 24 July 2027, and the CT600 for the period to 24 October 2026 is due at HMRC on 24 October 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 £289 (-58.7%) on the year before, to £203.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £3,738 against £2,780 owed within a year: 1.3 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £203 | £3,738 | £2,780 | 3 | |
| 31 Oct 2024 | £492 | £4,132 | £1,907 | 3 | |
| 31 Oct 2023 | £5,061 | £15K | £5,986 | 2 | |
| 31 Oct 2022 | £607 | £36K | £2,981 | 2 | |
| 31 Oct 2021 | £5,168 | £38K | £5,131 | 2 | |
| 31 Oct 2020 | £28K | £56K | £6,248 | 2 | |
| 31 Oct 2019 | £34K | £5,932 | £8,577 | 2 | |
| 31 Oct 2018 | £1,255 | £4,104 | £9,490 | ||
| 31 Oct 2017 | £659 | £4,572 | £11K | ||
| 31 Oct 2016 | £4,357 | £17K | £17K | £15K |
Where Sinewaves Electricals Ltd is registered
The registered office is in Birmingham (B12), in the Birmingham local authority area, West Midlands. Show B12 8SY on a map.
Other trade companies in B12
- Proton Tech Electrical LtdElectricians
- Leopold Auto LimitedMechanics and garages
- Apex Cleaners LtdCleaning companies
- Altitude Build Group LimitedGlaziers
- Glazed Direct LtdGlaziers
- Calderstead Facilities Management LtdFacilities management
- Repair Garage LimitedMechanics and garages
- Commercial Cleaning Services LtdCleaning companies
What happens if Sinewaves Electricals 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 24 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 25 Jul 2027 to 24 Aug 2027 | £150 |
| 1 to 3 months late | 25 Aug 2027 to 24 Oct 2027 | £375 |
| 3 to 6 months late | 25 Oct 2027 to 24 Jan 2028 | £750 |
| More than 6 months late | From 25 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 25 Oct 2027 | £200 |
| 3 months late | 24 Jan 2028 | another £200 |
| 6 months late | 24 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 24 Oct 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
- 09270405
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 October 2014 (11 years ago)
- Registered office
- Unit 2, Lime Grove Industrial Estate Lime Grove, Balsall Heath, Birmingham, B12 8SY
- Nature of business
- Repair of electrical equipment (SIC 33140)
- Year end
- 24 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 10 October 2025
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Birmingham
Other active machinery repair and installation companies registered in Birmingham.
- Six Weekly Services Ltd2025
- SJ Electrical Tech Limited2025
- Smallwood Engineering Solutions Ltd2024
- Smart Tec Mech Limited2020
- Smoke Vent Services Limited2019
- Solarzo Limited2021
- Solver Catering Specialist Ltd2015
- Sport Boats UK Limited2020
All machinery repair and installation companies in Birmingham · All trades in Birmingham · Machinery repair and installation across the UK
Frequently asked questions
When are Sinewaves Electricals Ltd's accounts due?
Sinewaves Electricals Ltd's next accounts are due at Companies House by 24 July 2027 (in 285 days), covering the period to 24 October 2026.
When is Sinewaves Electricals Ltd's CT600 due?
The CT600 for the period to 24 October 2026 is due at HMRC by 24 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 25 July 2027.
Is Sinewaves Electricals Ltd still trading?
Sinewaves Electricals 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 Sinewaves Electricals Ltd do?
Sinewaves Electricals Ltd is registered under Repair of electrical equipment (SIC 33140).
How old is Sinewaves Electricals Ltd?
Sinewaves Electricals Ltd was incorporated on 20 October 2014, 11 years ago.
What is the penalty if Sinewaves Electricals 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 Sinewaves Electricals 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.