Kilm Ltd
- Company number
- 11571888
- Incorporated
- 17 Sep 20188 years trading
- Registered office
- 83-85 Suite 2A 6TH Floor Cobolt Square, 83-85 Hagley Road, Birmingham, B16 8QG
- Nature of business
- Plumbing, heat and air-conditioning installation
Kilm Ltd is a 8-year-old private limited company registered in Birmingham, company number 11571888, one of 475 plumbing and heating companies in Birmingham. 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.
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 Kilm 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 £29K on the year before, to £27K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £159K against £53K owed within a year: 3.0 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 | £27K | £159K | £53K | 2 | |
| 31 Mar 2024 | -£1,902 | £89K | £43K | 2 | |
| 31 Mar 2023 | -£572 | £92K | £113K | 2 | |
| 31 Mar 2022 | £4,519 | £79K | £69K | 2 | |
| 31 Mar 2021 | £62K | £102K | £61K | 0 | |
| 31 Mar 2020 | £48K | £16K | £27K | 1 | |
| 31 Mar 2019 | £8,940 | £16K | £10K | 1 |
Where Kilm Ltd is registered
The registered office is in Birmingham (B16), in the Birmingham local authority area, West Midlands. Show B16 8QG on a map.
Other trade companies in B16
- MD Modern Tiles LtdFinishing trades
- Landkite LtdProperty developers
- Goldspire Property Holdings LtdProperty developers
- Ahpbala Construction LtdPlasterers
- Priority One Maintenance LtdPlasterers
- Doxservice LtdPlasterers
- Midwest Interior Solutions LtdFinishing trades
- Boost Automotive LimitedMotor traders
What happens if Kilm 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
- 11571888
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 September 2018 (8 years ago)
- Registered office
- 83-85 Suite 2A 6TH Floor Cobolt Square, 83-85 Hagley Road, Birmingham, B16 8QG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 16 September 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 Birmingham
Other active plumbing and heating companies registered in Birmingham.
- Klos Construction Ltd2014
- Klymatec Ltd2025
- Kmy Pro-Serv Ltd2019
- L S Toth & Sons Ltd2008
- Laight Mechanical Services Limited2013
- Lal Din & Son's Ltd2025
- Lava Heating Services Limited2010
- Lawtons Plumbing & Heating Ltd2019
All plumbing and heating companies in Birmingham · All trades in Birmingham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Kilm Ltd's accounts due?
Kilm 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 Kilm 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 Kilm Ltd still trading?
Kilm 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 Kilm Ltd do?
Kilm Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Kilm Ltd?
Kilm Ltd was incorporated on 17 September 2018, 8 years ago.
What is the penalty if Kilm 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 Kilm 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.