- Companies
- Plumbers and heating engineers
- Edinburgh
- Latent Heat Limited
Latent Heat Limited
- Company number
- SC271601
- Incorporated
- 4 Aug 200422 years trading
- Registered office
- The Signal Box, 5 Appin Lane, Edinburgh, EH14 1JL
- Nature of business
- Plumbing, heat and air-conditioning installation
Latent Heat Limited is a 22-year-old private limited company registered in Edinburgh, company number SC271601, one of 176 plumbing and heating companies in Edinburgh. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £17K (-5.1%) on the year before, to -£351K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £116K against £469K owed within a year: 0.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Jul 2025 | -£351K | £23K | £116K | £469K | 0 |
| 31 Jul 2024 | -£334K | £1,261 | £153K | £483K | 7 |
| 31 Jul 2023 | -£323K | £3,004 | £147K | £460K | 6 |
| 31 Jul 2022 | -£373K | £9,376 | £87K | £104K | 5 |
| 31 Jul 2021 | -£310K | £36K | £105K | £67K | 5 |
| 31 Jul 2020 | -£334K | £31K | £65K | £56K | 5 |
| 31 Jul 2019 | -£297K | £6,968 | £96K | £47K | |
| 31 Jul 2018 | -£263K | £13K | £59K | £322K | 3 |
| 31 Jul 2017 | -£234K | £3,573 | £44K | £276K | 2 |
| 31 Jul 2016 | -£214K | £328 | £53K | £269K |
Where Latent Heat Limited is registered
The registered office is in Edinburgh (EH14), in the City of Edinburgh local authority area, Scotland. Show EH14 1JL on a map.
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Also registered at this address
1 other company uses the same registered office as Latent Heat Limited.
- Aim Fire and Security LimitedElectricians
What happens if Latent Heat 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- SC271601
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 2004 (22 years ago)
- Registered office
- The Signal Box, 5 Appin Lane, Edinburgh, EH14 1JL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 25 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 Edinburgh
Other active plumbing and heating companies registered in Edinburgh.
- Lathart Ltd2024
- Letsure Gas Services Ltd2026
- LG Plumbing Services Ltd2021
- Liberton Plumbing & Heating Ltd2025
- Mac Plumbing Solutions Limited2021
- Mathias Innovative Bathroom Ltd2024
- Matt Irwin Plumber & Handyman Ltd2025
- McClure Plumbing & Heating Ltd2022
All plumbing and heating companies in Edinburgh · All trades in Edinburgh · Plumbers and heating engineers across the UK
Frequently asked questions
When are Latent Heat Limited's accounts due?
Latent Heat Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Latent Heat Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Latent Heat Limited still trading?
Latent Heat 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 Latent Heat Limited do?
Latent Heat Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Latent Heat Limited?
Latent Heat Limited was incorporated on 4 August 2004, 22 years ago.
What is the penalty if Latent Heat 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 Latent Heat 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.