- Companies
- Plumbers and heating engineers
- Kilmarnock
- RMLH Plumbing Limited
RMLH Plumbing Limited
- Company number
- SC733111
- Incorporated
- 20 May 20224 years trading
- Registered office
- 1 Simonsburn Road, Kilmarnock, Ayrshire, KA1 5LA
- Nature of business
- Plumbing, heat and air-conditioning installation
RMLH Plumbing Limited is a 4-year-old private limited company registered in Kilmarnock, company number SC733111, one of 45 plumbing and heating companies in Kilmarnock. 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 down £5,204 (-147.9%) on the year before, to -£8,722.
- Current assets of £6,165 against £16K owed within a year: 0.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£8,722 | £6,165 | £16K | 0 | |
| 31 May 2024 | -£3,518 | £11K | £18K | 1 | |
| 31 May 2023 | £1,511 | £3,269 | £6,504 | 1 |
Where RMLH Plumbing Limited is registered
The registered office is in Kilmarnock (KA1), in the East Ayrshire local authority area, Scotland. Show KA1 5LA on a map.
Other trade companies in KA1
- MM Electrical Instalations LtdElectricians
- Cornerstone Project Management LtdBuilders
- JCC.Vertex Build LtdElectricians
- Deo Property Consortium LimitedProperty developers
- Jake Robb Joinery LimitedJoiners and carpenters
- Cby Plumbing & Heating Solutions LtdPlumbers and heating engineers
- Elite Installs Scotland LtdPlumbers and heating engineers
- Elevate Joinery & Conservatory Specialist Ayrshire LimitedJoiners and carpenters
Shared registered office
70 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if RMLH Plumbing Limited 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
- SC733111
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 May 2022 (4 years ago)
- Registered office
- 1 Simonsburn Road, Kilmarnock, Ayrshire, KA1 5LA
- 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
- 19 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 Kilmarnock
Other active plumbing and heating companies registered in Kilmarnock.
- Smurfit Plumbing Ltd2024
- SRW Plumbing and Heating Ltd2025
- Steven Smith Gas Services Ltd2019
- Truheat Services Ayrshire Ltd2025
- A Clark & Son Plumbing and Heating Ltd2026
- A L Plumbing & Heating Limited2001
- Allan & Loy Plumbing & Heating Services Ltd2024
- Amw Plumbing & Heating Limited1999
All plumbing and heating companies in Kilmarnock · All trades in Kilmarnock · Plumbers and heating engineers across the UK
Frequently asked questions
When are RMLH Plumbing Limited's accounts due?
RMLH Plumbing Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is RMLH Plumbing Limited'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 RMLH Plumbing Limited still trading?
RMLH Plumbing Limited 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 RMLH Plumbing Limited do?
RMLH Plumbing Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is RMLH Plumbing Limited?
RMLH Plumbing Limited was incorporated on 20 May 2022, 4 years ago.
What is the penalty if RMLH Plumbing Limited 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 RMLH Plumbing Limited 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.