- Companies
- Civil engineering
- Bristol
- Mack Utilities Ltd
Mack Utilities Ltd
- Company number
- 12313151
- Incorporated
- 13 Nov 20196 years trading
- Registered office
- 87 High Street, Hanham, Bristol, Gloucestershire, BS15 3QG
- Nature of business
- Construction of utility projects for electricity and telecommunications
Mack Utilities Ltd is a 6-year-old private limited company registered in Bristol, company number 12313151, one of 172 civil engineering contractors in Bristol. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £511K (-67.5%) on the year before, to £247K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £341K against £290K owed within a year: 1.2 times cover.
- 5 employees on average, up from 0 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £247K | £78K | £341K | £290K | 5 |
| 30 Nov 2024 | £758K | £111K | £490K | £117K | 0 |
| 30 Nov 2023 | £680K | £245K | £543K | £219K | 4 |
| 30 Nov 2022 | £605K | £506K | £192K | 2 | |
| 30 Nov 2021 | £135K | £218K | £113K | 2 | |
| 30 Nov 2020 | £36K | £165K | £120K | 1 |
Where Mack Utilities Ltd is registered
The registered office is in Bristol (BS15), in the South Gloucestershire local authority area, South West. Show BS15 3QG on a map.
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Shared registered office
33 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 Utilities 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 12313151
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 November 2019 (6 years ago)
- Registered office
- 87 High Street, Hanham, Bristol, Gloucestershire, BS15 3QG
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 27 April 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Bristol
Other active civil engineering contractors registered in Bristol.
- Maley Project Solutions Ltd2025
- Marimar Luxury Limited2026
- Masters Pipeline Services Limited2003
- Matt Dagger Ltd2017
- McCarthy Construction Limited2003
- Mem Site Services Ltd2023
- MGS Groundworks & Construction Limited2025
- MJ Parker Project Management Ltd2026
All civil engineering contractors in Bristol · All trades in Bristol · Civil engineering across the UK
Frequently asked questions
When are Mack Utilities Ltd's accounts due?
Mack Utilities Ltd's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Mack Utilities Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Mack Utilities Ltd still trading?
Mack Utilities 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 Mack Utilities Ltd do?
Mack Utilities Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Mack Utilities Ltd?
Mack Utilities Ltd was incorporated on 13 November 2019, 6 years ago.
What is the penalty if Mack Utilities 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 Mack Utilities 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.