- Companies
- Plumbers and heating engineers
- Doncaster
- S.G Fire Protection Ltd
S.G Fire Protection Ltd
- Company number
- 12959358
- Incorporated
- 19 Oct 20205 years trading
- Registered office
- 6 Fields End, Misterton, Doncaster, DN10 4EA
- Nature of business
- Plumbing, heat and air-conditioning installation
S.G Fire Protection Ltd is a 5-year-old private limited company registered in Doncaster, company number 12959358, one of 150 plumbing and heating companies in Doncaster. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 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 £4,311 (-42.9%) on the year before, to £5,731.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £6,611 against £1,399 owed within a year: 4.7 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £5,731 | £5,066 | £6,611 | £1,399 | 1 |
| 31 Oct 2024 | £10K | £1,914 | £11K | £1,871 | 1 |
| 31 Oct 2023 | £14K | £4,557 | £13K | £1,847 | 1 |
| 31 Oct 2022 | £23K | £21K | £29K | £9,061 | 1 |
| 31 Oct 2021 | £1,984 | £1,768 | £3,614 | £4,147 | 1 |
Where S.G Fire Protection Ltd is registered
The registered office is in Doncaster (DN10), in the Bassetlaw local authority area, East Midlands. Show DN10 4EA on a map.
Other trade companies in DN10
- Get IT Best LimitedMotor traders
- Tyjr LimitedLandscapers and gardeners
- Lords of the Lock LtdMachinery repair and installation
- Total HVAC LimitedPlumbers and heating engineers
- Ma Plant Services LtdMachinery repair and installation
- LSK Plumbing and Heating LtdPlumbers and heating engineers
- C Foley Motors LimitedMotor traders
- Swinden Town Houses LtdProperty developers
Also registered at this address
1 other company uses the same registered office as S.G Fire Protection Ltd.
- Illingworth Fire Protection LtdInstallers
What happens if S.G Fire Protection 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 12959358
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 October 2020 (5 years ago)
- Registered office
- 6 Fields End, Misterton, Doncaster, DN10 4EA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 20 October 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 Doncaster
Other active plumbing and heating companies registered in Doncaster.
- Sandall Heating Services Ltd2021
- Scarbrook Plumbing and Heating Limited2007
- Sean Payne Plumbing & Heating Limited2014
- Sean Poulter Ltd2001
- Simba Heating Ltd2025
- Simon Hodgson Plumbing & Heating Services Limited2022
- SM4U Ltd2016
- South Yorkshire Heating Solutions Ltd2025
All plumbing and heating companies in Doncaster · All trades in Doncaster · Plumbers and heating engineers across the UK
Frequently asked questions
When are S.G Fire Protection Ltd's accounts due?
S.G Fire Protection Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is S.G Fire Protection Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is S.G Fire Protection Ltd still trading?
S.G Fire Protection 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 S.G Fire Protection Ltd do?
S.G Fire Protection Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is S.G Fire Protection Ltd?
S.G Fire Protection Ltd was incorporated on 19 October 2020, 5 years ago.
What is the penalty if S.G Fire Protection 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 S.G Fire Protection 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.