- Companies
- Plumbers and heating engineers
- Maidenhead
- Heatflow Installations Ltd.
Heatflow Installations Ltd.
- Company number
- 08858167
- Incorporated
- 23 Jan 201412 years trading
- Registered office
- Unit 1, New Farm Buildings, Drift Road, Maidenhead, SL6 3ST
- Nature of business
- Plumbing, heat and air-conditioning installation
Heatflow Installations Ltd. is a 12-year-old private limited company registered in Maidenhead, company number 08858167, one of 45 plumbing and heating companies in Maidenhead. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £35K (+42.2%) on the year before, to -£48K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £31K against £89K owed within a year: 0.3 times cover.
- 4 employees on average, down from 5 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 Jan 2025 | -£48K | £5,018 | £31K | £89K | 4 |
| 31 Jan 2024 | -£83K | £1,675 | £12K | £110K | 5 |
| 31 Jan 2023 | -£60K | £693 | £9,201 | £91K | 4 |
| 31 Jan 2022 | -£17K | £3,541 | £33K | £68K | 5 |
| 31 Jan 2021 | £8,735 | £4,149 | £88K | £101K | 3 |
| 31 Jan 2020 | £450 | £1,649 | £28K | £45K | 2 |
| 31 Jan 2019 | -£3,491 | £19K | £30K | 2 | |
| 31 Jan 2018 | -£5,271 | £1,702 | £14K | 1 | |
| 31 Jan 2017 | £1 | ||||
| 31 Jan 2016 | £1 |
Where Heatflow Installations Ltd. is registered
The registered office is in Maidenhead (SL6), in the Windsor and Maidenhead local authority area, South East. Show SL6 3ST on a map.
Other trade companies in SL6
- B&M Cleaning Solutions LtdCleaning companies
- CC Garden Builds LtdBuilders
- Austin Groundwork Surfaces LimitedGroundworks and demolition
- Woodnest Interiors LtdJoiners and carpenters
- Carizmatic Company LimitedMotor traders
- Sakura Electrical LtdElectricians
- Elite Autos & Tyres LtdMotor traders
- Bigfrith End LtdSpecialist contractors
What happens if Heatflow Installations 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 08858167
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 January 2014 (12 years ago)
- Registered office
- Unit 1, New Farm Buildings, Drift Road, Maidenhead, SL6 3ST
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 21 January 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 Maidenhead
Other active plumbing and heating companies registered in Maidenhead.
- Heritage Energy Solutions Ltd2026
- K & L Heating & Bathrooms Limited2007
- Kings Plumbing & Heating Limited2002
- Macdonald Plumbing and Heating Services Limited2008
- Metainy Air Conditioning Limited2000
- NJC Heating Limited2018
- Oakley Heating & Plumbing Ltd2019
- Panda Window Cleaning Ltd2021
All plumbing and heating companies in Maidenhead · All trades in Maidenhead · Plumbers and heating engineers across the UK
Frequently asked questions
When are Heatflow Installations Ltd.'s accounts due?
Heatflow Installations Ltd.'s next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Heatflow Installations Ltd.'s CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Heatflow Installations Ltd. still trading?
Heatflow Installations 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 Heatflow Installations Ltd. do?
Heatflow Installations Ltd. is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Heatflow Installations Ltd.?
Heatflow Installations Ltd. was incorporated on 23 January 2014, 12 years ago.
What is the penalty if Heatflow Installations 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 Heatflow Installations 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.