- Companies
- Plumbers and heating engineers
- London
- Bonair Limited
Bonair Limited
- Company number
- 02391257
- Incorporated
- 1 Jun 198937 years trading
- Registered office
- Suite 1, First Floor, 20A, The Mall, London, W5 2PJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Bonair Limited is a 37-year-old private limited company registered in London, company number 02391257, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
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 down £5,902 (-2.1%) on the year before, to £274K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £357K against £90K owed within a year: 4.0 times cover.
- 11 employees on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £274K | £220K | £357K | £90K | 11 |
| 31 Dec 2023 | £280K | £307K | £402K | £129K | 11 |
| 31 Dec 2022 | £248K | £235K | £347K | £82K | 11 |
| 31 Dec 2021 | £259K | £269K | £414K | £130K | 14 |
| 31 Dec 2020 | £250K | £271K | £388K | £118K | 14 |
| 31 Dec 2019 | £255K | £175K | £324K | £70K | 14 |
| 31 Dec 2018 | £368K | £330K | £497K | £129K | |
| 31 Dec 2017 | £251K | £198K | £454K | £204K | |
| 31 Dec 2016 | £324K | £326K | £515K | £208K | |
| 31 Dec 2015 | £327K | £277K | £430K | £136K |
Where Bonair Limited is registered
The registered office is in London (W5), in the Ealing local authority area, London. Show W5 2PJ on a map.
Other trade companies in W5
- Executive Windscreens LtdMechanics and garages
- Wow Motors LtdMotor traders
- GXR Motors LtdMotor traders
- Milford Projects LimitedBuilders
- P.W. Real Estate LimitedProperty developers
- FJMC LtdProperty developers
- Quick Fix Fone LtdRepair services
- JM Construction & Glazing LtdBuilders
Also registered at this address
4 other companies use the same registered office as Bonair Limited.
- Alpha Zebra Construction Services LtdSpecialist contractors
- Garden World Construction LimitedLandscapers and gardeners
- NP Plastering LtdPlasterers
- Ram Westgate LimitedMechanics and garages
What happens if Bonair 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
- 02391257
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 June 1989 (37 years ago)
- Registered office
- Suite 1, First Floor, 20A, The Mall, London, W5 2PJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 1 August 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 London
Other active plumbing and heating companies registered in London.
- Bond Heating & Plumbing Services Ltd2026
- Bonded Solutions Ltd2024
- Boniasellic Ltd2025
- Boost Plumbing & Heating Ltd2018
- Bordanza Limited2018
- Bossi Plumbing Limited2021
- Bostin’ Plumbing Ltd2021
- Bourkeys Heating & Plumbing Ltd2025
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Bonair Limited's accounts due?
Bonair 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 Bonair Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Bonair Limited still trading?
Bonair 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 Bonair Limited do?
Bonair Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Bonair Limited?
Bonair Limited was incorporated on 1 June 1989, 37 years ago.
What is the penalty if Bonair 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 Bonair 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.