- Companies
- Civil engineering
- Waltham Abbey
- Mac Engineering Ltd
Mac Engineering Ltd
- Company number
- 14617612
- Incorporated
- 26 Jan 20233 years trading
- Registered office
- 9 Theydon Court, Waltham Abbey, EN9 3HY
- Nature of business
- Construction of railways and underground railways
Mac Engineering Ltd is a 3-year-old private limited company registered in Waltham Abbey, company number 14617612, one of 18 civil engineering contractors in Waltham Abbey. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £2,400 (-24.5%) on the year before, to £7,393.
- Current assets of £9,557 against £2,164 owed within a year: 4.4 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £7,393 | £9,557 | £2,164 | 4 | |
| 31 Jan 2024 | £9,793 | £12K | £2,297 | 3 |
Where Mac Engineering Ltd is registered
The registered office is in Waltham Abbey (EN9), in the Epping Forest local authority area, East of England. Show EN9 3HY on a map.
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- Delton Project Services (DPS) LtdGroundworks and demolition
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- DM Rubbish Cleaning LimitedCleaning companies
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What happens if Mac Engineering 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 14617612
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 January 2023 (3 years ago)
- Registered office
- 9 Theydon Court, Waltham Abbey, EN9 3HY
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 25 January 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 Waltham Abbey
Other active civil engineering contractors registered in Waltham Abbey.
- Oasis Electrical Limited2026
- Orbital Civil Engineering Limited2017
- RK Celisse Ltd2018
- T & D Glazing and Installation Limited2003
- Tcon Paving Ltd2017
- Uca Rail Limited2023
- Cibi Cojo Ltd2023
- DCG Engineering Services Limited2021
All civil engineering contractors in Waltham Abbey · All trades in Waltham Abbey · Civil engineering across the UK
Frequently asked questions
When are Mac Engineering Ltd's accounts due?
Mac Engineering Ltd's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Mac Engineering Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Mac Engineering Ltd still trading?
Mac Engineering 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 Mac Engineering Ltd do?
Mac Engineering Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is Mac Engineering Ltd?
Mac Engineering Ltd was incorporated on 26 January 2023, 3 years ago.
What is the penalty if Mac Engineering 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 Mac Engineering 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.