- Companies
- Plumbers and heating engineers
- Southend-on-Sea
- Cool Mechanical Services Limited
Company profile · Plumbers and heating engineers
Cool Mechanical Services Limited
Cool Mechanical Services Limited is a 5-year-old private limited company registered in Southend-on-Sea, company number 13358647, one of 52 plumbing and heating companies in Southend-on-Sea. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Cool Mechanical Services LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2025
From the balance sheet at 30 April 2025, as filed at Companies House.
Cool Mechanical Services Limited over the years
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 £12K on the year before, to £12K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £62K against £49K owed within a year: 1.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £12K | £29K | £62K | £49K | 2 |
| 30 Apr 2024 | £299 | £3,079 | £55K | £53K | 2 |
| 30 Apr 2023 | £216 | £24K | £73K | £71K | 2 |
| 30 Apr 2022 | £233 | £11K | £34K | £35K | 2 |
Where Cool Mechanical Services Limited is registered
The registered office is in Southend-on-Sea (SS2), in the Southend-on-Sea local authority area, East of England. Show SS2 6HZ on a map.
Other trade companies in SS2
- Auto Point Services LtdMechanics and garages
- Lews Electrical LtdElectricians
- Joycarparts LtdMotor traders
- Waterfield Construction LtdBuilders
- Eddie's Vehicle Detailing LtdMechanics and garages
- Attac Projects An Trade Management LtdInstallers
- Southend Renovations LtdBuilders
- Boiro Projects LtdSpecialist contractors
Shared registered office
134 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 Cool Mechanical Services 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
- 13358647
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 April 2021 (5 years ago)
- Registered office
- Cumberland House, 24-28 Baxter Avenue, Southend-on-Sea, Essex, SS2 6HZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 25 April 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 Southend-on-Sea
Other active plumbing and heating companies registered in Southend-on-Sea.
- D & G Plumbing Limited2021
- D J Meara Heating & Plumbing Ltd2013
- DZ Plumbing and Heating Limited2023
- Ep Property Care Ltd2026
- Essex Gas (UK) Limited2006
- Eu Plumbing Limited2018
- Flint Climate Solutions Ltd2025
- Floorplan Plumbing & Gas Engineering Ltd2025
All plumbing and heating companies in Southend-on-Sea · All trades in Southend-on-Sea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cool Mechanical Services Limited's accounts due?
Cool Mechanical Services Limited's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Cool Mechanical Services Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Cool Mechanical Services Limited still trading?
Cool Mechanical Services 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 Cool Mechanical Services Limited do?
Cool Mechanical Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Cool Mechanical Services Limited?
Cool Mechanical Services Limited was incorporated on 26 April 2021, 5 years ago.
What is the penalty if Cool Mechanical Services 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 Cool Mechanical Services 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.