- Companies
- Plumbers and heating engineers
- High Wycombe
- Special Air Systems Ltd
Special Air Systems Ltd
- Company number
- 07324270
- Incorporated
- 23 Jul 201016 years trading
- Registered office
- 7 Haw Lane, Bledlow Ridge, High Wycombe, Buckinghamshire, HP14 4JJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Special Air Systems Ltd is a 16-year-old private limited company registered in High Wycombe, company number 07324270, one of 120 plumbing and heating companies in High Wycombe. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £2,740 (+7.2%) on the year before, to £41K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £51K against £11K owed within a year: 4.5 times cover.
- 1 employee on average during the year.
- 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 Jul 2025 | £41K | £46K | £51K | £11K | 1 |
| 31 Jul 2024 | £38K | £79K | £98K | £60K | 1 |
| 31 Jul 2023 | £29K | £39K | £51K | £23K | 1 |
| 31 Jul 2022 | £19K | £24K | £26K | £8,122 | 1 |
| 31 Jul 2021 | £32K | £42K | £46K | £14K | 1 |
| 31 Jul 2020 | £34K | £40K | £46K | £13K | 1 |
| 31 Jul 2019 | £34K | £31K | £42K | £10K | 2 |
| 31 Jul 2018 | £35K | £29K | £43K | £11K | 2 |
| 31 Jul 2017 | £130K | £62K | £131K | £18K | 3 |
| 31 Jul 2016 | £228K | £134K | £290K | £72K |
Where Special Air Systems Ltd is registered
The registered office is in High Wycombe (HP14), in the Buckinghamshire local authority area, South East. Show HP14 4JJ on a map.
Other trade companies in HP14
- Flowtime LtdPlumbers and heating engineers
- UK Max Property Solutions LtdJoiners and carpenters
- Henley Housekeepers LimitedCleaning companies
- Claydon Fire Solutions LtdElectricians
- TM Construction & Sons LimitedBuilders
- Reiss Constructions LimitedProperty developers
- Ability Tree Services LtdLandscapers and gardeners
- JM Rose Building LtdProperty developers
What happens if Special Air 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 07324270
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 July 2010 (16 years ago)
- Registered office
- 7 Haw Lane, Bledlow Ridge, High Wycombe, Buckinghamshire, HP14 4JJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 23 July 2026
- Previous names
- Plumb Logic Limited (until 13 Mar 2023)
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 High Wycombe
Other active plumbing and heating companies registered in High Wycombe.
- SR Plumbing and Heating Ltd2025
- Stay Warm (HW) Limited2018
- Stuart Robinson Plumbing and Heating Limited2012
- Suite-Bathrooms - Dave Spicer Ltd2018
- T & M Heating and Plumbing Ltd2026
- T H Heating Services Ltd2013
- The Heat Chief Ltd2021
- The Warmth and Water Group Ltd2026
All plumbing and heating companies in High Wycombe · All trades in High Wycombe · Plumbers and heating engineers across the UK
Frequently asked questions
When are Special Air Systems Ltd's accounts due?
Special Air Systems Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Special Air Systems Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Special Air Systems Ltd still trading?
Special Air 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 Special Air Systems Ltd do?
Special Air Systems Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Special Air Systems Ltd?
Special Air Systems Ltd was incorporated on 23 July 2010, 16 years ago.
What is the penalty if Special Air 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 Special Air 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.