- Companies
- Plumbers and heating engineers
- Hornchurch
- MJS Air Conditioning Ltd
MJS Air Conditioning Ltd
- Company number
- 11284410
- Incorporated
- 29 Mar 20188 years trading
- Registered office
- 92 Station Lane, Hornchurch, Essex, RM12 6LX
- Nature of business
- Plumbing, heat and air-conditioning installation
MJS Air Conditioning Ltd is a 8-year-old private limited company registered in Hornchurch, company number 11284410, one of 81 plumbing and heating companies in Hornchurch. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 down £16K (-15.1%) on the year before, to £93K.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £109K against £26K owed within a year: 4.2 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £93K | £109K | £26K | 2 | |
| 31 May 2024 | £109K | £121K | £25K | 2 | |
| 31 May 2023 | £75K | £99K | £31K | 2 | |
| 31 May 2022 | £46K | £65K | £24K | 2 | |
| 31 May 2021 | £46K | £69K | £28K | 2 | |
| 31 May 2020 | £10K | £51K | £45K | 2 | |
| 31 May 2019 | £6,950 | £25K | £21K |
Where MJS Air Conditioning Ltd is registered
The registered office is in Hornchurch (RM12), in the Havering local authority area, London. Show RM12 6LX on a map.
Other trade companies in RM12
- Al-Karam Doors & Crafts LtdJoiners and carpenters
- Mehrev Automotive Services LimitedMotor traders
- Khalis Builders LtdBuilders
- Hsa Trusted Service LtdCleaning companies
- JDC Group Solutions LtdFloor and wall tilers
- Ridgewell Electrical and Mechanical LtdElectricians
- Finescapes Essex LtdLandscapers and gardeners
- Fixpro Pest Control LtdCleaning companies
Also registered at this address
11 other companies use the same registered office as MJS Air Conditioning Ltd.
- B I S Door Systems LimitedInstallers
- Bespoke Cladding Solutions LtdProperty developers
- Bishops Electrical & Building Services LimitedElectricians
- Bison Shutters LtdInstallers
- C.D.S. (Heating + Plumbing) LimitedElectricians
- Coates Bro's (Upminster) Ltd.Builders
- J Lancaster LtdPainters and decorators
- KNF Electrical Contractors LimitedElectricians
- Maybank Projects LtdFinishing trades
- P K Auto's LimitedMechanics and garages
- Pag Scaffolding LtdScaffolders
What happens if MJS 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 11284410
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 March 2018 (8 years ago)
- Registered office
- 92 Station Lane, Hornchurch, Essex, RM12 6LX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 28 March 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 Hornchurch
Other active plumbing and heating companies registered in Hornchurch.
- Nicks Plumbing Limited2023
- NR Heating Ltd2011
- Paul's Heating Services Limited2020
- Pilot Light Plumbing and Heating Limited2020
- Prime SM Plumbing Ltd2026
- RDK Plumbing & Heating Limited2014
- RDS Bristol Ltd2026
- Ren Mechanical Services Limited2018
All plumbing and heating companies in Hornchurch · All trades in Hornchurch · Plumbers and heating engineers across the UK
Frequently asked questions
When are MJS Air Conditioning Ltd's accounts due?
MJS Air Conditioning Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is MJS Air Conditioning Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is MJS Air Conditioning Ltd still trading?
MJS 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 MJS Air Conditioning Ltd do?
MJS Air Conditioning Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MJS Air Conditioning Ltd?
MJS Air Conditioning Ltd was incorporated on 29 March 2018, 8 years ago.
What is the penalty if MJS 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 MJS 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.