- Companies
- Plumbers and heating engineers
- Southall
- Systematic Gas Ltd
Systematic Gas Ltd
- Company number
- 17106479
- Incorporated
- 20 Mar 2026
- Registered office
- 1 Masefield Avenue, Southall, UB1 2ND
- Nature of business
- Plumbing, heat and air-conditioning installation
Systematic Gas Ltd is a newly incorporated private limited company registered in Southall, company number 17106479, one of 60 plumbing and heating companies in Southall. Its next accounts are due at Companies House on 20 December 2027, and its first CT600 is due at HMRC on 19 March 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Systematic Gas Ltd is registered
The registered office is in Southall (UB1), in the Ealing local authority area, London. Show UB1 2ND on a map.
Other trade companies in UB1
- Kingsbury Roofing & Construction LtdRoofers
- T2Y LtdBuilders
- Driveworx LimitedMotor traders
- Raunak Design and Build LtdBuilders
- Phlo Plumbing & Heating LtdPlumbers and heating engineers
- Airpro Conditioning LimitedPlumbers and heating engineers
- Springfields Property LimitedProperty developers
- Sanndhu Construction UK LtdBuilders
What happens if Systematic 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 20 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Dec 2027 to 20 Jan 2028 | £150 |
| 1 to 3 months late | 21 Jan 2028 to 20 Mar 2028 | £375 |
| 3 to 6 months late | 21 Mar 2028 to 20 Jun 2028 | £750 |
| More than 6 months late | From 21 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 17106479
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 March 2026
- Registered office
- 1 Masefield Avenue, Southall, UB1 2ND
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 Southall
Other active plumbing and heating companies registered in Southall.
- TS Heating & Plumbing Ltd2020
- VSR Gas & Heating Ltd2024
- W5 Mep Services Ltd2022
- 3P'S Plumbing & Heating Ltd2016
- A&E Gas Ltd2024
- Ace Plumbing Services Ltd2024
- Airpro Conditioning Limited2026
- Amari Plumbing & Heating Ltd2025
All plumbing and heating companies in Southall · All trades in Southall · Plumbers and heating engineers across the UK
Frequently asked questions
When are Systematic Gas Ltd's accounts due?
Systematic Gas Ltd's next accounts are due at Companies House by 20 December 2027 (in 434 days), covering the period to 31 March 2027.
When is Systematic Gas Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 19 March 2027, due by 19 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Systematic Gas Ltd still trading?
Systematic 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 Systematic Gas Ltd do?
Systematic Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Systematic Gas Ltd?
Systematic Gas Ltd was incorporated on 20 March 2026, less than a year ago.
What is the penalty if Systematic 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 Systematic 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.