Kalmair Ltd
- Company number
- 11233139
- Incorporated
- 5 Mar 20188 years trading
- Registered office
- 25/27 Station Street, Cheslyn Hay, Walsall, West Midlands, WS6 7ED
- Nature of business
- Plumbing, heat and air-conditioning installation
Kalmair Ltd is a 8-year-old private limited company registered in Walsall, company number 11233139, one of 95 plumbing and heating companies in Walsall. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £3,882 (-20.9%) on the year before, to £15K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £44K against £24K owed within a year: 1.8 times cover.
- -2 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £15K | £3,245 | £44K | £24K | -2 |
| 31 Mar 2024 | £19K | £574 | £66K | £39K | -2 |
| 31 Mar 2023 | £8,975 | £24K | £48K | £26K | -2 |
| 31 Mar 2022 | £7,467 | £14K | £53K | £22K | -2 |
| 31 Mar 2021 | £11K | £25K | £64K | £20K | -3 |
| 31 Mar 2020 | £21K | £20K | £42K | £26K | -3 |
| 31 Mar 2019 | £7,164 | £1,893 | £28K | £23K | -2 |
Where Kalmair Ltd is registered
The registered office is in Walsall (WS6), in the South Staffordshire local authority area, West Midlands. Show WS6 7ED on a map.
Other trade companies in WS6
- Genesis Auto Repairs LimitedMechanics and garages
- Kendrick Development LtdInstallers
- Landscapes by Rico LtdLandscapers and gardeners
- DB Flooring LtdFinishing trades
- Jax Twins Groundworks LtdCivil engineering
- Anp Testing and Compliance LimitedElectricians
- We Fix Roofing LtdRoofers
- Kenco Plastering LtdPlasterers
Also registered at this address
9 other companies use the same registered office as Kalmair Ltd.
- Alliance Contractors (Eng) LtdGroundworks and demolition
- Car Electrics LtdMechanics and garages
- CM Electrical Midlands LimitedElectricians
- DN Fibre Splicing Services LtdInstallers
- E & S Cleaners LimitedCleaning companies
- Hampton Coach Trimming LimitedMechanics and garages
- Hawkins Plumbing Contractors LimitedPlumbers and heating engineers
- S.G.P Carpentry LimitedJoiners and carpenters
- Staffordshire Air Conditioning Services Ltd.Plumbers and heating engineers
What happens if Kalmair 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11233139
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 March 2018 (8 years ago)
- Registered office
- 25/27 Station Street, Cheslyn Hay, Walsall, West Midlands, WS6 7ED
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 4 March 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 Walsall
Other active plumbing and heating companies registered in Walsall.
- L & S Heating Services Ltd2003
- Lichfield Air Conditioning Ltd2026
- Limitlessuk Ltd2016
- LM Refrigeration Ltd2024
- Macdonald Installations Limited1996
- Marcos Install Limited2019
- Martin Philip Plumbing Ltd2021
- Mech - Enmark Limited2012
All plumbing and heating companies in Walsall · All trades in Walsall · Plumbers and heating engineers across the UK
Frequently asked questions
When are Kalmair Ltd's accounts due?
Kalmair Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Kalmair Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Kalmair Ltd still trading?
Kalmair 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 Kalmair Ltd do?
Kalmair Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Kalmair Ltd?
Kalmair Ltd was incorporated on 5 March 2018, 8 years ago.
What is the penalty if Kalmair 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 Kalmair 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.