- Companies
- Installers
- Treorchy
- South Wales Vent Systems Ltd
South Wales Vent Systems Ltd
- Company number
- 14127805
- Incorporated
- 24 May 20224 years trading
- Registered office
- 77 Bute Street, Treorchy, Rhondda Cynon Taf, CF42 6AH
- Nature of business
- Other construction installation
South Wales Vent Systems Ltd is a 4-year-old private limited company registered in Treorchy, company number 14127805, one of 6 installation companies (insulation, lifts, shutters and similar) in Treorchy. 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.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for South Wales Vent Systems LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £4,047 (-196.7%) on the year before, to -£1,990.
- Current assets of £14K against £16K owed within a year: 0.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£1,990 | £14K | £16K | 1 | |
| 31 Mar 2024 | £2,057 | £15K | £13K | 1 | |
| 31 Mar 2023 | £11K | £20K | £8,577 | 1 |
Where South Wales Vent Systems Ltd is registered
The registered office is in Treorchy (CF42), in the Rhondda Cynon Taf local authority area, Wales. Show CF42 6AH on a map.
Other trade companies in CF42
- Eagle.Pro.Roofing.UK. LtdRoofers
- Valley Flooring LtdFloor and wall tilers
- LL Property Partners LtdProperty developers
- A1 Lifting Operations LimitedCivil engineering
- Lewys Electrical LtdElectricians
- Pro-Renovate LtdProperty developers
- A & K Plastering and Rendering LtdBuilders
- Treorchy Hand Carwash 1 LtdCleaning companies
Also registered at this address
22 other companies use the same registered office as South Wales Vent Systems Ltd.
- A Helping Hand Commercial Cleaning LimitedCleaning companies
- CDJ Electrical LtdElectricians
- Concept Carpentry Services LimitedInstallers
- Coresafe Environmental LimitedSpecialist contractors
- Ebt Drylining LtdFinishing trades
- G Richards Builders LtdSpecialist contractors
- Hughes Brothers Roofing LtdRoofers
- Iri Reinforcements & Concrete LimitedCivil engineering
- Jay Hughes Roofing Solutions LimitedRoofers
- K2 Resin Specialists LimitedSpecialist contractors
- Kes Electrical Services South Wales LimitedElectricians
- Lewis.Plumbing.Heating LtdPlumbers and heating engineers
- MDS Heating Installations LimitedElectricians
- MOT & Auto Centre LtdMechanics and garages
- NCJ Drylining LtdPlasterers
- Premier Insulation & Building Treatments LimitedSpecialist contractors
- Pro Renewable UK LtdInstallers
- Pro-Renovate LtdProperty developers
- Sej Roofing LtdRoofers
- TG Scaffolding (Pontypridd) LtdScaffolders
- The Win-Door Avenue LtdGlaziers
- Watts Scaffolding Services SW LimitedScaffolders
What happens if South Wales Vent Systems 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 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
- 14127805
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 May 2022 (4 years ago)
- Registered office
- 77 Bute Street, Treorchy, Rhondda Cynon Taf, CF42 6AH
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 9 September 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Treorchy
Other active installation companies (insulation, lifts, shutters and similar) registered in Treorchy.
- Concept Carpentry Services Limited2025
- Ecoshield Windows Ltd2024
- Pro Renewable UK Ltd2023
- R C T Construction & Maintenance Limited2016
- Real Windows Limited2004
All installation companies (insulation, lifts, shutters and similar) in Treorchy · All trades in Treorchy · Installers across the UK
Frequently asked questions
When are South Wales Vent Systems Ltd's accounts due?
South Wales Vent Systems Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is South Wales Vent Systems Ltd'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 South Wales Vent Systems Ltd still trading?
South Wales Vent Systems 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 South Wales Vent Systems Ltd do?
South Wales Vent Systems Ltd is registered under Other construction installation (SIC 43290).
How old is South Wales Vent Systems Ltd?
South Wales Vent Systems Ltd was incorporated on 24 May 2022, 4 years ago.
What is the penalty if South Wales Vent Systems 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 South Wales Vent Systems 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.