- Companies
- Machinery repair and installation
- Plymouth
- Carbonish Structures Ltd
Carbonish Structures Ltd
- Company number
- 10835464
- Incorporated
- 26 Jun 20179 years trading
- Registered office
- 33 Mary Seacole Road, The Millfields, Plymouth, PL1 3JY
- Nature of business
- Repair and maintenance of ships and boats
Carbonish Structures Ltd is a 9-year-old private limited company registered in Plymouth, company number 10835464, one of 98 machinery repair and installation companies in Plymouth. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Carbonish Structures LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £2,009 (+521.8%) on the year before, to £2,394.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £18K against £35K owed within a year: 0.5 times cover.
- 2 employees 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 Jun 2025 | £2,394 | £7,257 | £18K | £35K | 2 |
| 30 Jun 2024 | £385 | £2,749 | £14K | £20K | 2 |
| 30 Jun 2023 | £471 | £10K | £10K | £17K | 2 |
| 30 Jun 2022 | £79 | £3,539 | £3,539 | £12K | 2 |
| 30 Jun 2021 | £23 | £1,000 | £1,000 | £11K | 2 |
| 30 Jun 2020 | £787 | £2,000 | £15K | 2 | |
| 30 Jun 2019 | £905 | £1,333 | £16K | ||
| 30 Jun 2018 | £73 | £2,282 | £19K |
Where Carbonish Structures Ltd is registered
The registered office is in Plymouth (PL1), in the Plymouth local authority area, South West. Show PL1 3JY on a map.
Other trade companies in PL1
- Clearway Drives & Patios LtdLandscapers and gardeners
- Techshopplymouth LtdRepair services
- Plymouth Garage LtdMechanics and garages
- Westmore Construction (South West) LtdProperty developers
- SW MOT LtdMechanics and garages
- SW Garage LtdMechanics and garages
- Mitchell Electrical (SW) LtdElectricians
- Mallu S Wheels UK LtdMotor traders
Shared registered office
48 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 Carbonish Structures 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 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
- 10835464
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 June 2017 (9 years ago)
- Registered office
- 33 Mary Seacole Road, The Millfields, Plymouth, PL1 3JY
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 25 June 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Plymouth
Other active machinery repair and installation companies registered in Plymouth.
- Cec Electrical and Building Maintenance Contractors Limited2012
- Charlie’S Bike Shop Ltd2025
- CNC Systems Limited2000
- Conlan Electrical Services Ltd2022
- Corrutech Ltd2026
- Custom Welding Limited2024
- Devon Domestics Limited2014
- Devon Grease Traps Ltd2024
All machinery repair and installation companies in Plymouth · All trades in Plymouth · Machinery repair and installation across the UK
Frequently asked questions
When are Carbonish Structures Ltd's accounts due?
Carbonish Structures Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Carbonish Structures Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Carbonish Structures Ltd still trading?
Carbonish Structures 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 Carbonish Structures Ltd do?
Carbonish Structures Ltd is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is Carbonish Structures Ltd?
Carbonish Structures Ltd was incorporated on 26 June 2017, 9 years ago.
What is the penalty if Carbonish Structures 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 Carbonish Structures 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.