- Companies
- Plumbers and heating engineers
- Ruislip
- CSD Gas Limited
CSD Gas Limited
- Company number
- 09331209
- Incorporated
- 27 Nov 201411 years trading
- Registered office
- C/O KDL Accountants, 1F Pembroke House,, 5-9 Pembroke Road,, Ruislip, Middlesex, HA4 8NQ
- Nature of business
- Plumbing, heat and air-conditioning installation
CSD Gas Limited is a 11-year-old private limited company registered in Ruislip, company number 09331209, one of 61 plumbing and heating companies in Ruislip. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £107K (+18.6%) on the year before, to £684K.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £938K against £374K owed within a year: 2.5 times cover.
- 13 employees on average, up from 6 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £684K | £89K | £938K | £374K | 13 |
| 31 Mar 2024 | £577K | £525K | £770K | £312K | 6 |
| 31 Mar 2023 | £454K | £524K | £746K | £328K | -3 |
| 31 Mar 2022 | £189K | £268K | £498K | £320K | -3 |
| 31 Mar 2021 | £131K | £116K | £248K | £118K | -2 |
| 31 Mar 2020 | £33K | £26K | £97K | £65K | -2 |
| 31 Mar 2019 | £21K | £13K | £37K | £19K | -2 |
| 31 Mar 2018 | £17K | £13K | £32K | £19K | -2 |
| 31 Mar 2017 | £16K | £11K | £30K | £19K | -2 |
| 31 Mar 2016 | £1 | £1 |
Public contracts won
CSD Gas Limited has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Southern Gas Networks (SGN) | FW Works - GD3 Repex Tier 1 - Southern 0330 | Ceiling, not shown | 1 Apr 2026 |
Where CSD Gas Limited is registered
The registered office is in Ruislip (HA4), in the Hillingdon local authority area, London. Show HA4 8NQ on a map.
Other trade companies in HA4
- SSC London LtdGroundworks and demolition
- DCR Industriltdal LtdPainters and decorators
- Katardino Monten for General Contracting and Supplies LtdCivil engineering
- Apex Build & Move LtdBuilders
- Ridgeway Building Contracts LimitedProperty developers
- Azya Farah LtdBuilders
- Howdens Roofing & Guttering LimitedRoofers
- Vetro Glazing LimitedGlaziers
Shared registered office
40 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if CSD Gas Limited 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 09331209
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 November 2014 (11 years ago)
- Registered office
- C/O KDL Accountants, 1F Pembroke House,, 5-9 Pembroke Road,, Ruislip, Middlesex, HA4 8NQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 29 April 2026
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 Ruislip
Other active plumbing and heating companies registered in Ruislip.
- Demarco Services Limited2014
- Dennisrom Solution Ltd2025
- DW Heating Ltd2021
- Eco Chill Limited2007
- Focus Heating (London) Ltd2023
- Fse Plumbing & Heating Ltd2025
- G S James Mechanical Services Ltd2004
- Green Gas Heating and Plumbing Ltd2025
All plumbing and heating companies in Ruislip · All trades in Ruislip · Plumbers and heating engineers across the UK
Frequently asked questions
When are CSD Gas Limited's accounts due?
CSD Gas Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is CSD Gas Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is CSD Gas Limited still trading?
CSD Gas Limited 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 CSD Gas Limited do?
CSD Gas Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is CSD Gas Limited?
CSD Gas Limited was incorporated on 27 November 2014, 11 years ago.
Has CSD Gas Limited won public sector contracts?
Yes. CSD Gas Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Southern Gas Networks (SGN).
What is the penalty if CSD Gas Limited 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 CSD Gas Limited 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.