- Companies
- Plumbers and heating engineers
- Gravesend
- Ammax Limited
Ammax Limited
- Company number
- 07865474
- Incorporated
- 30 Nov 201114 years trading
- Registered office
- 10 Harmer Street, Gravesend, Kent, DA12 2AX
- Nature of business
- Plumbing, heat and air-conditioning installation
Ammax Limited is a 14-year-old private limited company registered in Gravesend, company number 07865474, one of 97 plumbing and heating companies in Gravesend. Its next accounts are due at Companies House on 30 November 2026, and its first CT600 is due at HMRC on 30 November 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 £113K (-16.9%) on the year before, to £557K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £719K against £561K owed within a year: 1.3 times cover.
- 35 employees on average, up from 30 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Nov 2024 | £557K | £152K | £719K | £561K | 35 |
| 30 Nov 2023 | £670K | £145K | £630K | £388K | 30 |
| 30 Nov 2022 | £555K | £45K | £691K | £318K | 23 |
| 30 Nov 2021 | £497K | £41K | £646K | £5,295 | 23 |
| 30 Nov 2020 | £569K | £149K | £609K | £159K | 19 |
| 30 Nov 2019 | £1M | £451K | £925K | £146K | 11 |
| 30 Nov 2018 | £442K | £608K | £888K | £473K | |
| 30 Nov 2017 | £92K | £21K | £150K | £63K | |
| 30 Nov 2016 | £60K | £21K | £85K | £30K | |
| 30 Nov 2015 | £51K | £42K | £206K | £162K |
Where Ammax Limited is registered
The registered office is in Gravesend (DA12), in the Gravesham local authority area, South East. Show DA12 2AX on a map.
Other trade companies in DA12
- Kirkdale Construction Maintenance LimitedProperty developers
- Mech Elec LtdSpecialist contractors
- Ground Forces Construct LtdBuilders
- XL@Cleaning LimitedCleaning companies
- Signature Group Air Conditioning LtdPlumbers and heating engineers
- VS Sekhon LtdFloor and wall tilers
- Kapoor Construction LtdBuilders
- Double D Maintain LtdSpecialist contractors
Also registered at this address
17 other companies use the same registered office as Ammax Limited.
- 11274193 LtdProperty developers
- 7-Oaks LtdProperty developers
- Ab Design + Build Contractors LtdBuilders
- Acr Fire & Electrical LtdElectricians
- Aintree Building Services LtdSpecialist contractors
- Dunstan Blake LtdBuilders
- Ferndale Construction South-East LimitedBuilders
- Find A Car UK LimitedMotor traders
- Fleetserve 24 LtdMechanics and garages
- Hertz Construction Solutions LtdProperty developers
- J Group LtdProperty developers
- Jgroup Asset Hold LtdBuilders
- ML Motorsport LtdMachinery repair and installation
- SJR Brickwork LimitedFinishing trades
- Spinnaker Developments LtdFinishing trades
- Swains of West Berkshire LtdInstallers
- TS Site Services LimitedCivil engineering
What happens if Ammax 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 07865474
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 November 2011 (14 years ago)
- Registered office
- 10 Harmer Street, Gravesend, Kent, DA12 2AX
- 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 2024
- Last confirmation statement
- 7 November 2025
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 Gravesend
Other active plumbing and heating companies registered in Gravesend.
- Asg Services Ltd2025
- Atd Design Solutions Ltd2017
- Best 1 Aircon and Heating Ltd2022
- Bevan Plumbing & Heating Limited2008
- Brahm Construction Limited2024
- Brians Plumbing and Heating Limited2002
- BSK Heating UK Limited2015
- Burnett Oil & Heating Services Limited2014
All plumbing and heating companies in Gravesend · All trades in Gravesend · Plumbers and heating engineers across the UK
Frequently asked questions
When are Ammax Limited's accounts due?
Ammax Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Ammax 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 30 November 2025, due by 30 November 2026, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ammax Limited still trading?
Ammax 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 Ammax Limited do?
Ammax Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Ammax Limited?
Ammax Limited was incorporated on 30 November 2011, 14 years ago.
What is the penalty if Ammax 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 Ammax 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.