- Companies
- Plumbers and heating engineers
- Cwmbran
- Blue Mountain Air Conditioning Ltd
Blue Mountain Air Conditioning Ltd
- Company number
- 05974241
- Incorporated
- 23 Oct 200619 years trading
- Registered office
- 318 Woodside Way, Springvale Industrial Estate, Cwmbran, Torfaen, NP44 5BR
- Nature of business
- Plumbing, heat and air-conditioning installation
Blue Mountain Air Conditioning Ltd is a 19-year-old private limited company registered in Cwmbran, company number 05974241, one of 24 plumbing and heating companies in Cwmbran. 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 Blue Mountain Air Conditioning 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 £172K (-26.2%) on the year before, to £485K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £404K against £22K owed within a year: more than 10 times cover.
- 12 employees on average, up from 11 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 | £485K | £219K | £404K | £22K | 12 |
| 30 Nov 2024 | £657K | £497K | £610K | £81K | 11 |
| 30 Nov 2023 | £572K | £243K | £346K | £47K | 12 |
| 30 Nov 2022 | £563K | £248K | £388K | £96K | 12 |
| 30 Nov 2021 | £356K | £267K | £372K | £83K | 10 |
| 30 Nov 2020 | £220K | £231K | £48K | 8 | |
| 30 Nov 2019 | £149K | £158K | £43K | 8 | |
| 30 Nov 2018 | £99K | £97K | £38K | ||
| 30 Nov 2017 | £91K | £79K | £28K | ||
| 30 Nov 2016 | £73K | £69K | £32K |
Where Blue Mountain Air Conditioning Ltd is registered
The registered office is in Cwmbran (NP44), in the Torfaen local authority area, Wales. Show NP44 5BR on a map.
Other trade companies in NP44
- Compliant Fire Safety Solutions LtdInstallers
- V&K Solutions LimitedCivil engineering
- Pure Clean by Nichola LtdCleaning companies
- Amsof LimitedPlumbers and heating engineers
- Marchant Home Solutions Ltd LtdBuilders
- True Level Concrete LtdBuilders
- A2Z Tech LimitedMachinery repair and installation
- Days Ventilation Solutions LtdPlumbers and heating engineers
What happens if Blue Mountain Air Conditioning 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 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
- 05974241
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 October 2006 (19 years ago)
- Registered office
- 318 Woodside Way, Springvale Industrial Estate, Cwmbran, Torfaen, NP44 5BR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 9 May 2026
- Charges (mortgages)
- 0 outstanding of 1 registered
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 Cwmbran
Other active plumbing and heating companies registered in Cwmbran.
- C&G Gas Services Limited2023
- CLB Gaspro Ltd2026
- Combi-Nation Boiler Install , Repairs & Servicing Ltd2023
- Complete Bathrooms Limited1995
- Crow Valley Gas Services and Electrical Installation Ltd2012
- Days Ventilation Solutions Ltd2026
- DJB Heating Limited2023
- Elegant Bathrooms & Precise Tiling Limited2025
All plumbing and heating companies in Cwmbran · All trades in Cwmbran · Plumbers and heating engineers across the UK
Frequently asked questions
When are Blue Mountain Air Conditioning Ltd's accounts due?
Blue Mountain Air Conditioning Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Blue Mountain Air Conditioning Ltd'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 Blue Mountain Air Conditioning Ltd still trading?
Blue Mountain Air Conditioning 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 Blue Mountain Air Conditioning Ltd do?
Blue Mountain Air Conditioning Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Blue Mountain Air Conditioning Ltd?
Blue Mountain Air Conditioning Ltd was incorporated on 23 October 2006, 19 years ago.
What is the penalty if Blue Mountain Air Conditioning 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 Blue Mountain Air Conditioning 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.