- Companies
- Installers
- March
- J G Mason Sub-Contractors Groundwork Services Limited
J G Mason Sub-Contractors Groundwork Services Limited
- Company number
- 05458294
- Incorporated
- 20 May 200521 years trading
- Registered office
- Fenland House, 15B Hostmoor Avenue, March, Cambridgeshire, PE15 0AX
- Nature of business
- Other construction installation
J G Mason Sub-Contractors Groundwork Services Limited is a 21-year-old private limited company registered in March, company number 05458294, one of 15 installation companies (insulation, lifts, shutters and similar) in March. Its next accounts are due at Companies House on 5 January 2027, and the CT600 for the period to 5 April 2026 is due at HMRC on 5 April 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 £101K (+17.4%) on the year before, to £679K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £820K against £209K owed within a year: 3.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 5 Apr 2025 | £679K | £330K | £820K | £209K | 0 |
| 5 Apr 2024 | £578K | £294K | £853K | £310K | 2 |
| 5 Apr 2023 | £407K | £100K | £665K | £270K | 3 |
| 5 Apr 2022 | £297K | £344K | £74K | 3 | |
| 5 Apr 2021 | £261K | £399K | £105K | 3 | |
| 5 Apr 2020 | £250K | £366K | £135K | 3 | |
| 5 Apr 2019 | £268K | £407K | £163K | ||
| 5 Apr 2018 | £159K | £167K | £30K | ||
| 5 Apr 2017 | £128K | £10K | £105K | £8,825 | 3 |
| 5 Apr 2016 | £105K | £5,758 | £103K | £18K |
Where J G Mason Sub-Contractors Groundwork Services Limited is registered
The registered office is in March (PE15), in the Fenland local authority area, East of England. Show PE15 0AX on a map.
Other trade companies in PE15
- Ace Resin Surfacing LimitedFloor and wall tilers
- Impway Connections LimitedCivil engineering
- Zee Plus Services LtdFinishing trades
- Coreshine LtdCleaning companies
- J Kirby Utilities LtdCivil engineering
- M B Concierge LtdMotor traders
- WS Civil Consultant LtdCivil engineering
- Ga Motors LimitedMotor traders
Also registered at this address
17 other companies use the same registered office as J G Mason Sub-Contractors Groundwork Services Limited.
- Adam's Tyre & MOT Centre LimitedMechanics and garages
- Ajs Farming LimitedProperty developers
- Dodson Bros. (Thatchers) LimitedRoofers
- Enis Construction Solutions LtdProperty developers
- FRW (UK) LtdBuilders
- Good-Looking Wood LtdJoiners and carpenters
- Herbert Drive LimitedProperty developers
- Hoodsport (Soham) LimitedProperty developers
- M Ward Construction LimitedGroundworks and demolition
- Mill Cottage Plumbing & Heating LtdPlumbers and heating engineers
- Neil Cawthorn Accident Repairs LimitedMechanics and garages
- New Whip UK LtdMotor traders
- Nor-Cambs Homes & Developments LtdBuilders
- Novus Properties Cambridge LimitedBuilders
- Orangehouse Renewables LimitedPlumbers and heating engineers
- Rainbow Conversions LtdMotor traders
- Washbrook Farm Motocross LtdMotor traders
What happens if J G Mason Sub-Contractors Groundwork 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 5 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Jan 2027 to 5 Feb 2027 | £150 |
| 1 to 3 months late | 6 Feb 2027 to 5 Apr 2027 | £375 |
| 3 to 6 months late | 6 Apr 2027 to 5 Jul 2027 | £750 |
| More than 6 months late | From 6 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 6 Apr 2027 | £200 |
| 3 months late | 5 Jul 2027 | another £200 |
| 6 months late | 5 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 5 Apr 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
- 05458294
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 May 2005 (21 years ago)
- Registered office
- Fenland House, 15B Hostmoor Avenue, March, Cambridgeshire, PE15 0AX
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 5 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 5 April 2025
- Last confirmation statement
- 21 December 2025
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in March
Other active installation companies (insulation, lifts, shutters and similar) registered in March.
- KD Building Maintenance and Refurbishing Ltd2025
- Kingham Audio Visual Ltd2019
- M&J Shoesmith Limited2021
- Mace Frames Ltd2019
- Morton Technical Services Limited2023
- NP Carpentry Services Limited2018
- Roy Fisher Groundworks (March) Ltd2004
- 4 County Commercial Interiors Limited2025
All installation companies (insulation, lifts, shutters and similar) in March · All trades in March · Installers across the UK
Frequently asked questions
When are J G Mason Sub-Contractors Groundwork Services Limited's accounts due?
J G Mason Sub-Contractors Groundwork Services Limited's next accounts are due at Companies House by 5 January 2027 (in 84 days), covering the period to 5 April 2026.
When is J G Mason Sub-Contractors Groundwork Services Limited's CT600 due?
The CT600 for the period to 5 April 2026 is due at HMRC by 5 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 6 January 2027.
Is J G Mason Sub-Contractors Groundwork Services Limited still trading?
J G Mason Sub-Contractors Groundwork 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 J G Mason Sub-Contractors Groundwork Services Limited do?
J G Mason Sub-Contractors Groundwork Services Limited is registered under Other construction installation (SIC 43290).
How old is J G Mason Sub-Contractors Groundwork Services Limited?
J G Mason Sub-Contractors Groundwork Services Limited was incorporated on 20 May 2005, 21 years ago.
What is the penalty if J G Mason Sub-Contractors Groundwork 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 J G Mason Sub-Contractors Groundwork 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.