- Companies
- Plumbers and heating engineers
- Leigh-on-Sea
- Quantums Mechanical Services Ltd
Quantums Mechanical Services Ltd
- Company number
- 08594750
- Incorporated
- 2 Jul 201313 years trading
- Registered office
- Kingsley House, 22-24 Elm Road, Leigh-on-Sea, Essex, SS9 1SN
- Nature of business
- Plumbing, heat and air-conditioning installation
Quantums Mechanical Services Ltd is a 13-year-old private limited company registered in Leigh-on-Sea, company number 08594750, one of 60 plumbing and heating companies in Leigh-on-Sea. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £1,473 (+243.5%) on the year before, to £2,078.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £173K against £174K owed within a year: 1.0 times cover.
- 3 employees on average, up from -3 the year before.
- 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 Oct 2025 | £2,078 | £21K | £173K | £174K | 3 |
| 31 Oct 2024 | £605 | £7,849 | £256K | £251K | -3 |
| 31 Oct 2023 | £72K | £61K | £148K | £61K | -3 |
| 31 Oct 2022 | £120K | £167K | £238K | £93K | -3 |
| 31 Oct 2021 | £4,722 | £36K | £124K | £84K | -3 |
| 31 Oct 2020 | £4,509 | £82K | £111K | £62K | -3 |
| 31 Oct 2019 | £12K | £75K | £102K | £92K | -3 |
| 31 Oct 2018 | £11K | £41K | £105K | £95K | -2 |
| 31 Oct 2017 | £18K | £24K | £106K | £89K | -2 |
| 31 Jul 2016 | £26K | £18K | £102K | £77K |
Where Quantums Mechanical Services Ltd is registered
The registered office is in Leigh-on-Sea (SS9), in the Southend-on-Sea local authority area, East of England. Show SS9 1SN on a map.
Other trade companies in SS9
- Cheap Locksmith Essex LtdRepair services
- Alexander Hall Real Estate LtdProperty developers
- Britannia Roofing & Dampproofing LtdRoofers
- Elite Build & Co (Essex) LtdBuilders
- High Lift Scaffold LimitedScaffolders
- Hill's Plumbing, Heating & Gas LtdPlumbers and heating engineers
- MTS Piling LimitedSpecialist contractors
- Install & Transport LimitedMachinery repair and installation
Shared registered office
37 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Quantums Mechanical Services 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 08594750
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2013 (13 years ago)
- Registered office
- Kingsley House, 22-24 Elm Road, Leigh-on-Sea, Essex, SS9 1SN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 2 July 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 Leigh-on-Sea
Other active plumbing and heating companies registered in Leigh-on-Sea.
- Quinnwells Plumbing, Heating & Gas Limited2025
- Raw Plumbing Services Limited2015
- RWD Weld Testing Services Limited2009
- Safe and Sound Gas Services Limited2004
- Se Maintenance Contractors Ltd2024
- Solar 4 You Limited2021
- Sonray Plumbing Ltd2021
- Southend Bathrooms Ltd2023
All plumbing and heating companies in Leigh-on-Sea · All trades in Leigh-on-Sea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Quantums Mechanical Services Ltd's accounts due?
Quantums Mechanical Services Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Quantums Mechanical Services Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Quantums Mechanical Services Ltd still trading?
Quantums Mechanical Services 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 Quantums Mechanical Services Ltd do?
Quantums Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Quantums Mechanical Services Ltd?
Quantums Mechanical Services Ltd was incorporated on 2 July 2013, 13 years ago.
What is the penalty if Quantums Mechanical Services 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 Quantums Mechanical Services 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.