- Companies
- Plumbers and heating engineers
- Thornton Heath
- Iknow Heating Ltd
Iknow Heating Ltd
- Company number
- 14873592
- Incorporated
- 16 May 20233 years trading
- Registered office
- 3 Redford Avenue, Thornton Heath, CR7 6HR
- Nature of business
- Plumbing, heat and air-conditioning installation
Iknow Heating Ltd is a 3-year-old private limited company registered in Thornton Heath, company number 14873592, one of 24 plumbing and heating companies in Thornton Heath. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £1,317 (+80.4%) on the year before, to -£322.
- Current assets of £11K against £12K owed within a year: 0.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£322 | £11K | £12K | 1 | |
| 31 May 2024 | -£1,639 | £4,139 | £4,404 | £7,265 | 1 |
Where Iknow Heating Ltd is registered
The registered office is in Thornton Heath (CR7), in the Croydon local authority area, London. Show CR7 6HR on a map.
Other trade companies in CR7
- Ib Air Conditioning LimitedPlumbers and heating engineers
- Gold Carpet Cleaning Services LtdCleaning companies
- Azad Auto LtdMechanics and garages
- Tota Steel LtdFinishing trades
- Survey Stream Property Services LtdFacilities management
- Saunders Mechanics LtdMechanics and garages
- SR Gas London LimitedPlumbers and heating engineers
- Prestige Auto Repair & Body Works LtdMechanics and garages
What happens if Iknow Heating 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 14873592
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 May 2023 (3 years ago)
- Registered office
- 3 Redford Avenue, Thornton Heath, CR7 6HR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 15 May 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 Thornton Heath
Other active plumbing and heating companies registered in Thornton Heath.
- JL Heat & Plumbing Ltd2019
- Jvac Services Ltd2025
- L.Graham & Co Ltd.2023
- LMP Builders Ltd2010
- M Boyce Gas & Plumbing Limited2019
- McHugh Property Services Ltd2021
- Megawave Energy Solutions Ltd2022
- MM Group Services Ltd2023
All plumbing and heating companies in Thornton Heath · All trades in Thornton Heath · Plumbers and heating engineers across the UK
Frequently asked questions
When are Iknow Heating Ltd's accounts due?
Iknow Heating Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Iknow Heating Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Iknow Heating Ltd still trading?
Iknow Heating 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 Iknow Heating Ltd do?
Iknow Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Iknow Heating Ltd?
Iknow Heating Ltd was incorporated on 16 May 2023, 3 years ago.
What is the penalty if Iknow Heating 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 Iknow Heating 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.