- Companies
- Property developers
- London
- JMK Boatworks Ltd
JMK Boatworks Ltd
- Company number
- 10761812
- Incorporated
- 9 May 20179 years trading
- Registered office
- Room 2B01 South Bank Technopark, 90 London Road, London, London, SE1 6LN
- Nature of business
- Development of building projects; Construction of domestic buildings; Joinery installation; Other specialised construction activities n.e.c.
JMK Boatworks Ltd is a 9-year-old private limited company registered in London, company number 10761812, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
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 JMK Boatworks 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 unchanged on the year before, at £1.
- Net assets rose in 2 of 8 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2018 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £1 | £1 | £1 | £0 | 0 |
| 31 May 2025 | £1 | £1 | £1 | £0 | 0 |
| 31 May 2024 | £1 | £1 | £1 | £0 | 0 |
| 31 May 2023 | -£12K | £7,383 | 1 | ||
| 31 May 2022 | -£10K | £22 | £6,362 | 1 | |
| 31 May 2021 | -£9,185 | £4 | £4,962 | 1 | |
| 31 May 2020 | -£8,413 | £7,713 | 1 | ||
| 31 May 2019 | -£756 | £1 | £757 | ||
| 31 May 2018 | -£975 | £375 |
Where JMK Boatworks Ltd is registered
The registered office is in London (SE1), in the Southwark local authority area, London. Show SE1 6LN on a map.
Other trade companies in SE1
- Complete Bathroom Renovations LtdPlumbers and heating engineers
- Vision Studio Property LimitedProperty developers
- Chaplin Centre 2 LimitedProperty developers
- Mahir Building Services LtdSpecialist contractors
- Southwarklambethservices LtdSpecialist contractors
- Green Lane Cobham LtdProperty developers
- Ig Renewables SPV 10 LtdProperty developers
- Tapenjointers LimitedPlasterers
What happens if JMK Boatworks 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2029 | 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
- 10761812
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 May 2017 (9 years ago)
- Registered office
- Room 2B01 South Bank Technopark, 90 London Road, London, London, SE1 6LN
- Nature of business
- Development of building projects (SIC 41100)
Construction of domestic buildings (SIC 41202)
Joinery installation (SIC 43320)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 5 May 2024
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- JMP Build Ltd2023
- JMRC Mechanical Design Limited2021
- JNH Construction Ltd2025
- JNHP Developments Limited2025
- JNZ Construction Ltd2021
- Joa Consult Limited Ltd.2023
- Joakim O Connor Ltd2016
- Jobo Homes Limited2024
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are JMK Boatworks Ltd's accounts due?
JMK Boatworks Ltd's next accounts are due at Companies House by 29 February 2028 (in 504 days), covering the period to 31 May 2027.
When is JMK Boatworks Ltd's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is JMK Boatworks Ltd still trading?
JMK Boatworks Ltd is listed as active on the Companies House register (checked 12 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 JMK Boatworks Ltd do?
JMK Boatworks Ltd is registered under Development of building projects (SIC 41100); Construction of domestic buildings (SIC 41202); Joinery installation (SIC 43320); Other specialised construction activities n.e.c. (SIC 43999).
How old is JMK Boatworks Ltd?
JMK Boatworks Ltd was incorporated on 9 May 2017, 9 years ago.
What is the penalty if JMK Boatworks 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 JMK Boatworks Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.