- Companies
- Plumbers and heating engineers
- Reading
- C.M.C.Boiler Services Limited
C.M.C.Boiler Services Limited
- Company number
- 01018418
- Incorporated
- 21 Jul 197155 years trading
- Registered office
- The White House Mill Road, Goring, Reading, RG8 9DD
- Nature of business
- Plumbing, heat and air-conditioning installation; Dormant Company
C.M.C.Boiler Services Limited is a 55-year-old private limited company registered in Reading, company number 01018418, one of 221 plumbing and heating companies in Reading. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 unchanged on the year before, at £208K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £444 against £209K owed within a year: 0.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £208K | £444 | £209K | 0 | |
| 31 Jul 2024 | £208K | £751 | £209K | 0 | |
| 31 Jul 2023 | £208K | £436 | £208K | 0 | |
| 31 Jul 2022 | £208K | £3,205 | £211K | 0 | |
| 31 Jul 2021 | £195K | £24K | £207K | 10 |
Who runs and owns C.M.C.Boiler Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (4)
| Name | Role | Appointed |
|---|---|---|
| K*** C*** | Director | before Sep 1991 |
| K*** C*** | Director | before Sep 1991 |
| S*** C*** | Director | before Sep 1991 |
| Mortimer Burnett Ltd | Secretary (company) | May 2022 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| S*** C*** | Secretary | Oct 1995 | May 2022 |
| T*** S*** | Secretary | Oct 1995 | |
| R*** C*** | Director | Oct 1997 |
Person with significant control
Charges (secured borrowing)
1 of 1 registered charge is outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Barclays Bank Ltd | Outstanding | Dec 1975 |
Where C.M.C.Boiler Services Limited is registered
The registered office is in Reading (RG8), in the South Oxfordshire local authority area, South East. Show RG8 9DD on a map.
Other trade companies in RG8
- Whitman Building Services Residential LtdBuilders
- Pangbourne Vehicle Services LtdMechanics and garages
- DP Gate Solutions LimitedFinishing trades
- Avents Paddock LtdProperty developers
- B&H Builds LtdProperty developers
- Eastfield Contracts LimitedInstallers
- Fernhill Property Group LimitedBuilders
- Get Knotted LimitedSpecialist contractors
Also registered at this address
3 other companies use the same registered office as C.M.C.Boiler Services Limited.
- Cie Cleaning LtdCleaning companies
- Henderson Building Surveyors LtdFinishing trades
- Summit Landscapes LimitedLandscapers and gardeners
What happens if C.M.C.Boiler Services 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 01018418
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 July 1971 (55 years ago)
- Registered office
- The White House Mill Road, Goring, Reading, RG8 9DD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Dormant Company (SIC 99999) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 16 September 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Reading
Other active plumbing and heating companies registered in Reading.
- Caan Services Limited2021
- Cameoplumbing Ltd2026
- Cao Plumbing Limited2016
- Castello Heating Services Ltd2019
- Chilli Pepper Properties Limited2010
- Chris Jones & Son Ltd2007
- Clark Bicknell Ltd1999
- CLH Plumbing & Heating Limited2026
All plumbing and heating companies in Reading · All trades in Reading · Plumbers and heating engineers across the UK
Frequently asked questions
When are C.M.C.Boiler Services Limited's accounts due?
C.M.C.Boiler Services Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is C.M.C.Boiler Services Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is C.M.C.Boiler Services Limited still trading?
C.M.C.Boiler Services Limited is listed as active on the Companies House register (checked 13 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 C.M.C.Boiler Services Limited do?
C.M.C.Boiler Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Dormant Company (SIC 99999).
How old is C.M.C.Boiler Services Limited?
C.M.C.Boiler Services Limited was incorporated on 21 July 1971, 55 years ago.
Who runs C.M.C.Boiler Services Limited?
C.M.C.Boiler Services Limited has 3 active directors. Their names and service addresses are on the Companies House register.
Who owns C.M.C.Boiler Services Limited?
One person or company has significant control of C.M.C.Boiler Services Limited: Cmc Holdings Limited (owns 75% or more of the shares).
What is the penalty if C.M.C.Boiler Services 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 C.M.C.Boiler Services Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.