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- Mack Heating Services Limited
Company profile · Plumbers and heating engineers
Mack Heating Services Limited
Mack Heating Services Limited is a 8-year-old private limited company registered in Stowmarket, company number 11486499, one of 34 plumbing and heating companies in Stowmarket. Its next accounts are due at Companies House on 29 March 2027, and the CT600 for the period to 29 June 2026 is due at HMRC on 29 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 June 2025, as filed at Companies House.
Mack Heating Services Limited over the years
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 £4,769 (-15.8%) on the year before, to £25K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £18K against £8,342 owed within a year: 2.2 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £25K | £18K | £8,342 | 1 | |
| 30 Jun 2024 | £30K | £25K | £15K | 1 | |
| 30 Jun 2023 | £38K | £44K | £34K | 1 | |
| 30 Jun 2022 | £39K | £30K | £25K | 1 | |
| 30 Jun 2021 | £25K | £31K | £25K | 1 | |
| 30 Jun 2020 | £12K | £33K | £28K | 1 | |
| 30 Jun 2019 | £3,709 | £17K | £20K |
Who runs and owns Mack Heating Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| R*** M*** | Director | Jul 2018 |
Person with significant control
Where Mack Heating Services Limited is registered
The registered office is in Stowmarket (IP14), in the Mid Suffolk local authority area, East of England. Show IP14 1JA on a map.
Other trade companies in IP14
- Ipswich Flat Roofing Solutions LimitedRoofers
- Wilkinson Contracting LimitedBuilders
- LBK Asbestos Suffolk LtdCleaning companies
- Fault Protection LtdElectricians
- Dennis Automotive Group LtdMotor traders
- JRB Carpentry & Joinery LtdJoiners and carpenters
- Suffolk Car and Van LtdMotor traders
- Site Ready Services LimitedCleaning companies
Shared registered office
145 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 Mack Heating 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 29 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Mar 2027 to 29 Apr 2027 | £150 |
| 1 to 3 months late | 30 Apr 2027 to 29 Jun 2027 | £375 |
| 3 to 6 months late | 30 Jun 2027 to 29 Sep 2027 | £750 |
| More than 6 months late | From 30 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jun 2027 | £200 |
| 3 months late | 29 Sep 2027 | another £200 |
| 6 months late | 29 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jun 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
- 11486499
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 July 2018 (8 years ago)
- Registered office
- Bury Lodge, Bury Road, Stowmarket, Suffolk, IP14 1JA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 26 July 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 Stowmarket
Other active plumbing and heating companies registered in Stowmarket.
- MJL Plumbing & Heating (Suffolk) Limited2010
- MP Plumbing & Heating Suffolk Limited2020
- MPD Tanks Ltd2015
- MRD Plumbing (Essex) Limited2023
- Nexgen Engineering Solutions Limited2023
- Optimus Gas Services Limited2015
- Palmer's Plumbing & Heating Limited2011
- Powerhouse Heating & Plumbing Services Ltd2026
All plumbing and heating companies in Stowmarket · All trades in Stowmarket · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mack Heating Services Limited's accounts due?
Mack Heating Services Limited's next accounts are due at Companies House by 29 March 2027 (in 168 days), covering the period to 29 June 2026.
When is Mack Heating Services Limited's CT600 due?
The CT600 for the period to 29 June 2026 is due at HMRC by 29 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 March 2027.
Is Mack Heating Services Limited still trading?
Mack Heating Services 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 Mack Heating Services Limited do?
Mack Heating Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mack Heating Services Limited?
Mack Heating Services Limited was incorporated on 27 July 2018, 8 years ago.
Who runs Mack Heating Services Limited?
Mack Heating Services Limited has 1 active director, the longest-serving appointed in Jul 2018. Their names and service addresses are on the Companies House register.
Who owns Mack Heating Services Limited?
One person or company has significant control of Mack Heating Services Limited: an individual (owns 75% or more of the shares).
What is the penalty if Mack Heating 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 Mack Heating Services 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.