- Company number
- 09218638
- Incorporated
- 15 Sep 201412 years trading
- Registered office
- 4 Grosvenor Court, Brighton Road, Sutton, SM2 5BL
- Nature of business
- Construction of commercial buildings; Other cleaning services
Semkovi Ltd is a 12-year-old private limited company registered in Sutton, company number 09218638, one of 236 building contractors in Sutton. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £12K (+132.4%) on the year before, to £21K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £27K against £3,644 owed within a year: 7.4 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £21K | £14K | £27K | £3,644 | 1 |
| 30 Sep 2024 | £9,034 | £8,688 | £15K | £3,124 | 1 |
| 30 Sep 2023 | £5,110 | £6,327 | £14K | £3,881 | 1 |
| 30 Sep 2022 | £4,203 | £7,901 | £15K | £3,901 | 1 |
| 30 Sep 2021 | £759 | £6,464 | £12K | £2,140 | 2 |
| 30 Sep 2020 | £5,823 | £13K | £19K | £3,136 | 2 |
| 30 Sep 2019 | £1,900 | £1,303 | £13K | £11K | 2 |
| 30 Sep 2018 | £2,288 | £2,545 | £9,171 | £6,883 | |
| 30 Sep 2017 | £190 | £2,078 | £7,023 | £6,833 | |
| 30 Sep 2016 | £153 | £1,557 | £9,088 | £8,935 |
Where Semkovi Ltd is registered
The registered office is in Sutton (SM2), in the Sutton local authority area, London. Show SM2 5BL on a map.
Other trade companies in SM2
- Stent Projects London LtdBuilders
- Ry Rigging Services LtdInstallers
- JP Plumbing, Heating & Drainage Solutions LtdPlumbers and heating engineers
- MR & Sons Roofing & Building LtdBuilders
- Velora Facilities LimitedCleaning companies
- Sparkle Shark LtdCleaning companies
- GL Building Solutions LtdBuilders
- Bespoke Air Design and Installation LimitedPlumbers and heating engineers
What happens if Semkovi 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 09218638
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 2014 (12 years ago)
- Registered office
- 4 Grosvenor Court, Brighton Road, Sutton, SM2 5BL
- Nature of business
- Construction of commercial buildings (SIC 41201)
Other cleaning services (SIC 81299) - Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 27 August 2026
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 Sutton
Other active building contractors registered in Sutton.
- SG Decorating Ltd2016
- Shapeup Interiors Limited2025
- Silverback Roofing Ltd.2020
- Sirius Developments Surrey Ltd2025
- Skadrock Limited2019
- Skirtify Ltd2025
- SM1 Management Ltd2020
- Solomon Solutions Ltd2020
All building contractors in Sutton · All trades in Sutton · Builders across the UK
Frequently asked questions
When are Semkovi Ltd's accounts due?
Semkovi Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Semkovi Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Semkovi Ltd still trading?
Semkovi 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 Semkovi Ltd do?
Semkovi Ltd is registered under Construction of commercial buildings (SIC 41201); Other cleaning services (SIC 81299).
How old is Semkovi Ltd?
Semkovi Ltd was incorporated on 15 September 2014, 12 years ago.
What is the penalty if Semkovi 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 Semkovi 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.