- Companies
- Machinery repair and installation
- Swansea
- Williams Ventilation Limited
Williams Ventilation Limited
- Company number
- 08314199
- Incorporated
- 30 Nov 201213 years trading
- Registered office
- 177 Trewyddfa Road, Morriston, Swansea, SA6 8NX
- Nature of business
- Repair of other equipment
Williams Ventilation Limited is a 13-year-old private limited company registered in Swansea, company number 08314199, one of 98 machinery repair and installation companies in Swansea. 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.
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 Williams Ventilation LimitedOr 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 up £9,922 (+11.5%) on the year before, to £96K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £161K against £86K owed within a year: 1.9 times cover.
- 2 employees on average, down from 3 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 | £96K | £161K | £86K | 2 | |
| 30 Nov 2024 | £86K | £172K | £98K | 3 | |
| 30 Nov 2023 | £92K | £165K | £94K | 3 | |
| 30 Nov 2022 | £90K | £155K | £99K | 4 | |
| 30 Nov 2021 | £57K | £171K | £133K | 4 | |
| 30 Nov 2020 | £72K | £233K | £145K | 5 | |
| 30 Nov 2019 | £49K | £199K | £120K | ||
| 30 Nov 2018 | £52K | £208K | £121K | ||
| 30 Nov 2017 | £1,334 | £114K | £77K | ||
| 30 Nov 2016 | £485 | £117K | £94K |
Where Williams Ventilation Limited is registered
The registered office is in Swansea (SA6), in the Swansea local authority area, Wales. Show SA6 8NX on a map.
Other trade companies in SA6
- Alpine Roofing (Swansea) LimitedRoofers
- Auto Surplus Wales LtdMotor traders
- Roofmaster Roofing and Building LtdProperty developers
- Everyday Maintenance Services LtdSpecialist contractors
- M.E Exterior Cleaning LimitedCleaning companies
- Color Harmony LtdPainters and decorators
- RSM Cars LimitedMotor traders
- T&T Roofing & Home Improvements LtdRoofers
What happens if Williams Ventilation 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 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
- 08314199
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 November 2012 (13 years ago)
- Registered office
- 177 Trewyddfa Road, Morriston, Swansea, SA6 8NX
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 30 November 2025
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Swansea
Other active machinery repair and installation companies registered in Swansea.
- WJC Engineering Services Ltd2019
- A M J Electrical Services Ltd2015
- A R Autos Limited2003
- Aa Cooling System Ltd2021
- Alpha Electrics Contracting Limited2002
- Als Property Maintenance Limited2019
- Amd Welding Ltd2024
- Ammaja Limited2021
All machinery repair and installation companies in Swansea · All trades in Swansea · Machinery repair and installation across the UK
Frequently asked questions
When are Williams Ventilation Limited's accounts due?
Williams Ventilation Limited's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Williams Ventilation Limited'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 Williams Ventilation Limited still trading?
Williams Ventilation 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 Williams Ventilation Limited do?
Williams Ventilation Limited is registered under Repair of other equipment (SIC 33190).
How old is Williams Ventilation Limited?
Williams Ventilation Limited was incorporated on 30 November 2012, 13 years ago.
What is the penalty if Williams Ventilation 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 Williams Ventilation 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.