- Companies
- Electricians
- Greenford
- Sismep Ltd
Sismep Ltd
- Company number
- 12044292
- Incorporated
- 11 Jun 20197 years trading
- Registered office
- 56 Fraser Road, Perivale, Greenford, UB6 7AL
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Architectural activities; Engineering design activities for industrial process and production
Sismep Ltd is a 7-year-old private limited company registered in Greenford, company number 12044292, one of 53 electrical contractors in Greenford. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £203 (+56.2%) on the year before, to £564.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £101K against £80K owed within a year: 1.3 times cover.
- 8 employees on average, up from 6 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £564 | £12K | £101K | £80K | 8 |
| 30 Jun 2024 | £361 | £28K | £101K | £77K | 6 |
| 30 Jun 2023 | £765 | £19K | £128K | £97K | 3 |
| 30 Jun 2022 | £326 | £68K | £216K | £176K | 2 |
| 30 Jun 2021 | -£4,420 | £1,550 | £72K | £36K | 3 |
| 30 Jun 2020 | -£1,182 | £25K | £46K | £2,816 | 2 |
Where Sismep Ltd is registered
The registered office is in Greenford (UB6), in the Ealing local authority area, London. Show UB6 7AL on a map.
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Also registered at this address
1 other company uses the same registered office as Sismep Ltd.
- Sismep Installations LtdElectricians
What happens if Sismep 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 12044292
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 June 2019 (7 years ago)
- Registered office
- 56 Fraser Road, Perivale, Greenford, UB6 7AL
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Architectural activities (SIC 71111)
Engineering design activities for industrial process and production (SIC 71121) - Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 26 September 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 Greenford
Other active electrical contractors registered in Greenford.
- Smart Auto Gate Ltd2019
- Sparkly Service Ltd2023
- Sparkspeedo Ltd2025
- Steelvolt Ltd2026
- Sunrise Electrical Ltd2020
- Sync Group Limited2023
- Unique Construction (London) Limited2004
- Y Q Electrical Ltd2024
All electrical contractors in Greenford · All trades in Greenford · Electricians across the UK
Frequently asked questions
When are Sismep Ltd's accounts due?
Sismep Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Sismep Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Sismep Ltd still trading?
Sismep Ltd is listed as active on the Companies House register (checked 13 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 Sismep Ltd do?
Sismep Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Architectural activities (SIC 71111); Engineering design activities for industrial process and production (SIC 71121).
How old is Sismep Ltd?
Sismep Ltd was incorporated on 11 June 2019, 7 years ago.
What is the penalty if Sismep 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 Sismep Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.