- Companies
- Specialist contractors
- Middlesbrough
- Donal Mason Plant Limited
Donal Mason Plant Limited
- Company number
- 11081469
- Incorporated
- 24 Nov 20178 years trading
- Registered office
- Hughes House, Cargo Fleet Road, Middlesbrough, TS3 6AG
- Nature of business
- Other specialised construction activities n.e.c.
Donal Mason Plant Limited is a 8-year-old private limited company registered in Middlesbrough, company number 11081469, one of 191 specialist construction companies in Middlesbrough. 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 up £192K (+82.7%) on the year before, to £425K.
- Net assets rose in 6 of 7 year-on-year comparisons on record.
- Current assets of £499K against £129K owed within a year: 3.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £425K | £237K | £499K | £129K | 1 |
| 30 Nov 2024 | £232K | £129K | £259K | £98K | 1 |
| 30 Nov 2023 | £129K | £67K | £118K | £46K | 1 |
| 30 Nov 2022 | £129K | £59K | £149K | £55K | 2 |
| 30 Nov 2021 | £111K | £65K | £118K | £61K | 1 |
| 30 Nov 2020 | £90K | £60K | £101K | £68K | 1 |
| 30 Nov 2019 | £56K | £29K | £39K | £69K | 1 |
| 30 Nov 2018 | £6,174 | £22K | £24K | £44K | 1 |
Where Donal Mason Plant Limited is registered
The registered office is in Middlesbrough (TS3), in the Middlesbrough local authority area, North East. Show TS3 6AG on a map.
Other trade companies in TS3
- PJS Investment's LtdMotor traders
- S&Z Auto Bodyworks LimitedMechanics and garages
- Z&S Auto Centre LimitedMechanics and garages
- Anth Paint LtdPainters and decorators
- Kaw Engineering Services LimitedElectricians
- Mam Construction LtdBuilders
- S T Offshore Rigging LtdCivil engineering
- Cleveland Landscapes LtdLandscapers and gardeners
Also registered at this address
1 other company uses the same registered office as Donal Mason Plant Limited.
- Retaining Holdings LimitedSpecialist contractors
What happens if Donal Mason Plant 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 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
- 11081469
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 November 2017 (8 years ago)
- Registered office
- Hughes House, Cargo Fleet Road, Middlesbrough, TS3 6AG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 23 November 2025
- Previous names
- Da Plant Hire Limited (until 28 Mar 2022)
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Middlesbrough
Other active specialist construction companies registered in Middlesbrough.
- Donaldson R/A Insulation Ltd2024
- DT Windtech Ltd2026
- Ec Industrial Solutions Ltd2024
- Emn Rigging & Lifting Services Limited2017
- Ep Property Maintenance Ltd2025
- Es Richardson Ltd2024
- Fenk Services Ltd2026
- Fernhouse Construction Services Ltd2021
All specialist construction companies in Middlesbrough · All trades in Middlesbrough · Specialist contractors across the UK
Frequently asked questions
When are Donal Mason Plant Limited's accounts due?
Donal Mason Plant Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Donal Mason Plant Limited'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 Donal Mason Plant Limited still trading?
Donal Mason Plant 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 Donal Mason Plant Limited do?
Donal Mason Plant Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Donal Mason Plant Limited?
Donal Mason Plant Limited was incorporated on 24 November 2017, 8 years ago.
What is the penalty if Donal Mason Plant 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 Donal Mason Plant 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.