Sem Gas Ltd
- Company number
- 05300520
- Incorporated
- 30 Nov 200421 years trading
- Registered office
- 1ST Floor 49 High Street, Hucknall, Nottingham, NG15 7AW
- Nature of business
- Plumbing, heat and air-conditioning installation
Sem Gas Ltd is a 21-year-old private limited company registered in Hucknall, company number 05300520, one of 24 plumbing and heating companies in Hucknall. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £65 (+46.1%) on the year before, to £206.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £16K against £16K owed within a year: 1.0 times cover.
- 1 employee on average, down from 2 the year before.
- 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 Nov 2025 | £206 | £16K | £16K | 1 | |
| 30 Nov 2024 | £141 | £18K | £18K | 2 | |
| 30 Nov 2023 | £223 | £8,764 | £8,693 | 2 | |
| 30 Nov 2022 | £436 | £7,038 | £6,805 | 2 | |
| 30 Nov 2021 | £839 | £8,438 | £7,599 | 2 | |
| 30 Nov 2020 | £366 | £11K | £11K | 2 | |
| 30 Nov 2019 | £136 | £5,170 | £6,294 | 2 | |
| 30 Nov 2018 | £119 | £12K | £13K | ||
| 30 Nov 2017 | £157 | £7,245 | £9,327 | ||
| 30 Nov 2016 | £103 | £2,359 | £8,453 | £8,339 |
Who runs and owns Sem Gas Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| S*** M*** | Director | Nov 2004 |
| L*** H*** | Director | Jul 2026 |
4 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| E*** M*** | Secretary | Aug 2006 | May 2014 |
| C*** W*** | Secretary | Nov 2004 | Aug 2006 |
| Swift Incorporations Limited | Corporate Nominee Secretary | Nov 2004 | Nov 2004 |
| Instant Companies Limited | Nominee director (company) | Nov 2004 | Nov 2004 |
Person with significant control
Where Sem Gas Ltd is registered
The registered office is in Hucknall (NG15), in the Ashfield local authority area, East Midlands. Show NG15 7AW on a map.
Other trade companies in NG15
- M Richardson Flooring LtdBuilders
- MV Paint LtdPainters and decorators
- Huknall Motovex LtdMotor traders
- Clean the UK LimitedCleaning companies
- Another Abode Contracting LimitedProperty developers
- Annesley Worker LtdCleaning companies
- Northline Projects Group LtdElectricians
- Krisdriver4U LtdMechanics and garages
Also registered at this address
17 other companies use the same registered office as Sem Gas Ltd.
- 1ST Call Refrigeration LtdMachinery repair and installation
- Cma Solar Installations LtdInstallers
- East Midlands Civil Engineers LtdCivil engineering
- Elite Electrical Projects Nottingham LimitedElectricians
- GD Power Services LimitedCivil engineering
- Hallam & Co Building Services LtdFinishing trades
- Hartan LimitedCleaning companies
- JPS Developments (Nottingham) LimitedProperty developers
- Ken Burrows LimitedElectricians
- L&M Interiors LimitedPlumbers and heating engineers
- M.D.O Shopfitting LimitedInstallers
- Midlands Response LimitedCleaning companies
- P W Pro LtdMechanics and garages
- Paine Property Development LimitedProperty developers
- QCS Electrical LtdElectricians
- Rhys G Builders LtdBuilders
- W Lowe Electrical LimitedElectricians
What happens if Sem Gas 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 05300520
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 November 2004 (21 years ago)
- Registered office
- 1ST Floor 49 High Street, Hucknall, Nottingham, NG15 7AW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 29 November 2025
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Hucknall
Other active plumbing and heating companies registered in Hucknall.
- T&A Services Limited2020
- Torkard West Limited1965
- Ultra Air Limited2023
- Air Transfer Systems Ltd2007
- Airways Heating Limited1967
- Belmar Services Limited2002
- Comfort Central Heating Limited2026
- Cube Air Conditioning & Renewables Ltd2026
All plumbing and heating companies in Hucknall · All trades in Hucknall · Plumbers and heating engineers across the UK
Frequently asked questions
When are Sem Gas Ltd's accounts due?
Sem Gas Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Sem Gas Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Sem Gas Ltd still trading?
Sem Gas 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 Sem Gas Ltd do?
Sem Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Sem Gas Ltd?
Sem Gas Ltd was incorporated on 30 November 2004, 21 years ago.
Who runs Sem Gas Ltd?
Sem Gas Ltd has 2 active directors, the longest-serving appointed in Nov 2004. Their names and service addresses are on the Companies House register.
Who owns Sem Gas Ltd?
One person or company has significant control of Sem Gas Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Sem Gas 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 Sem Gas 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.