- Companies
- Plumbers and heating engineers
- Southampton
- Inner Heat Ltd
Inner Heat Ltd
- Company number
- 13864266
- Incorporated
- 21 Jan 20224 years trading
- Registered office
- 53 Newtown Road, Southampton, SO19 9HX
- Nature of business
- Plumbing, heat and air-conditioning installation
Inner Heat Ltd is a 4-year-old private limited company registered in Southampton, company number 13864266, one of 246 plumbing and heating companies in Southampton. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 Inner Heat LtdOr 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.
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 £9,465 (+52.8%) on the year before, to £27K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2023 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £27K | £60K | 2 | ||
| 31 Jan 2025 | £18K | £55K | £49K | 2 | |
| 31 Jan 2024 | £18K | £56K | £54K | 2 | |
| 31 Jan 2023 | £15K | £36K | £38K | 2 |
Where Inner Heat Ltd is registered
The registered office is in Southampton (SO19), in the Southampton local authority area, South East. Show SO19 9HX on a map.
Other trade companies in SO19
- 4LK Cleaning Company LtdCleaning companies
- Nest Path Properties LimitedBuilders
- Dautaj Groundworks LtdBuilders
- Craftline Carpentry Services LtdJoiners and carpenters
- Agape-Wise LimitedCleaning companies
- Cool Enterprises LtdPlumbers and heating engineers
- Jmac Carpentry & Building LtdPlasterers
- Auto Motive Dismantling - Amd LtdMotor traders
What happens if Inner Heat 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 13864266
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 January 2022 (4 years ago)
- Registered office
- 53 Newtown Road, Southampton, SO19 9HX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 6 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 Southampton
Other active plumbing and heating companies registered in Southampton.
- Input Bathrooms Limited2019
- J Talbot Plumbing&Heating Ltd2021
- J. & D. Humphrey Limited2002
- J.Gulliver Plumbing and Heating Limited2024
- James & Withers Limited2009
- Jeremy Gailor Plumbing and Heating Ltd2016
- Jewells Gas Services Limited2012
- JGM Commercial Ltd2023
All plumbing and heating companies in Southampton · All trades in Southampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Inner Heat Ltd's accounts due?
Inner Heat Ltd's next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is Inner Heat Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Inner Heat Ltd still trading?
Inner Heat 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 Inner Heat Ltd do?
Inner Heat Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Inner Heat Ltd?
Inner Heat Ltd was incorporated on 21 January 2022, 4 years ago.
What is the penalty if Inner Heat 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 Inner Heat 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.