- Companies
- Plumbers and heating engineers
- Lymington
- M & J Air Conditioning Limited
M & J Air Conditioning Limited
- Company number
- 05763068
- Incorporated
- 30 Mar 200620 years trading
- Registered office
- Suite 114, Lymington Town Hall, Avenue Road, Lymington, Hampshire, SO41 9ZG
- Nature of business
- Plumbing, heat and air-conditioning installation
M & J Air Conditioning Limited is a 20-year-old private limited company registered in Lymington, company number 05763068, one of 14 plumbing and heating companies in Lymington. Its next accounts are due at Companies House on 31 January 2027, and its first CT600 is due at HMRC on 31 March 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 £4,024 (+24.3%) on the year before, to £21K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £51K against £24K owed within a year: 2.1 times cover.
- 2 employees 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 Mar 2025 | £21K | £51K | £24K | 2 | |
| 31 Mar 2024 | £17K | £54K | £18K | 2 | |
| 31 Mar 2023 | £33K | £47K | £13K | 2 | |
| 31 Mar 2022 | £36K | £51K | £15K | 2 | |
| 31 Mar 2021 | £22K | £32K | £10K | 2 | |
| 31 Mar 2020 | £29K | £68K | £39K | 2 | |
| 31 Mar 2019 | £18K | £43K | £26K | ||
| 31 Mar 2018 | £10K | £26K | £20K | ||
| 31 Mar 2017 | £13K | £37K | £28K | ||
| 30 Mar 2016 | £22K | £51K | £33K |
Where M & J Air Conditioning Limited is registered
The registered office is in Lymington (SO41), in the New Forest local authority area, South East. Show SO41 9ZG on a map.
Other trade companies in SO41
- Romero Construction LtdBuilders
- Sea Glass Zero LimitedLandscapers and gardeners
- Vincent's Auto Repairs LtdMechanics and garages
- Buckland Homes LtdProperty developers
- Deep Blue Navigation LtdElectricians
- Tyre Brothers LtdMechanics and garages
- Bull Cleaning Solutions LtdCleaning companies
- Harbour & House LtdProperty developers
Also registered at this address
10 other companies use the same registered office as M & J Air Conditioning Limited.
- Adrian Harvey Motor Engineers LtdMechanics and garages
- Black Racing Team LtdMachinery repair and installation
- Crill Carpentry & Construction LtdBuilders
- Flawless Yachting LimitedMachinery repair and installation
- Matthew Palmer LimitedJoiners and carpenters
- Moyles Gas Care LimitedRepair services
- New Forest Tennis Courts LtdSpecialist contractors
- P. D. Coombs LimitedJoiners and carpenters
- R.S. Marine Services LimitedMachinery repair and installation
- Robert Ingrem LimitedPainters and decorators
What happens if M & J Air Conditioning 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 05763068
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 March 2006 (20 years ago)
- Registered office
- Suite 114, Lymington Town Hall, Avenue Road, Lymington, Hampshire, SO41 9ZG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 29 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 Lymington
Other active plumbing and heating companies registered in Lymington.
- P C Harding Plumbing and Heating Ltd2003
- Simon Young Ltd2020
- SL Energy Ltd2023
- SMR Gas and Oil Limited2003
- Solwat Green Energy Ltd2020
- TND Lymington Limited2016
- Triton Plumbing and Heating Ltd2022
- Wayne Stride Fires Limited2014
All plumbing and heating companies in Lymington · All trades in Lymington · Plumbers and heating engineers across the UK
Frequently asked questions
When are M & J Air Conditioning Limited's accounts due?
M & J Air Conditioning Limited's next accounts are due at Companies House by 31 January 2027 (in 109 days), covering the period to 30 April 2026.
When is M & J Air Conditioning 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 March 2026, due by 31 March 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is M & J Air Conditioning Limited still trading?
M & J Air Conditioning 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 M & J Air Conditioning Limited do?
M & J Air Conditioning Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is M & J Air Conditioning Limited?
M & J Air Conditioning Limited was incorporated on 30 March 2006, 20 years ago.
What is the penalty if M & J Air Conditioning 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 M & J Air Conditioning 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.