- Companies
- Specialist contractors
- Grimsby
- JWM Insulations Ltd
JWM Insulations Ltd
- Company number
- 10325678
- Incorporated
- 11 Aug 201610 years trading
- Registered office
- 35 Salisbury Avenue, Waltham, Grimsby, DN37 0BU
- Nature of business
- Other specialised construction activities n.e.c.
JWM Insulations Ltd is a 10-year-old private limited company registered in Grimsby, company number 10325678, one of 102 specialist construction companies in Grimsby. Its next accounts are due at Companies House on 29 May 2027, and the CT600 for the period to 29 August 2026 is due at HMRC on 29 August 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 £48K (+27%) on the year before, to £224K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £341K against £130K owed within a year: 2.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £224K | £341K | £130K | 1 | |
| 31 Aug 2024 | £177K | £249K | £91K | 1 | |
| 30 Aug 2024 | £177K | £249K | £91K | 1 | |
| 30 Aug 2023 | £137K | £204K | £55K | 1 | |
| 31 Aug 2022 | £90K | £203K | £81K | 1 | |
| 31 Aug 2021 | £53K | £130K | £68K | 1 | |
| 31 Aug 2020 | £63K | £183K | £114K | 1 | |
| 31 Aug 2019 | £87K | £111K | £44K | 2 | |
| 31 Aug 2018 | £73K | £132K | £85K | ||
| 31 Aug 2017 | £11K | £11K | £27K | £34K |
Who runs and owns JWM Insulations Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** H*** | Director | Aug 2016 |
Person with significant control
Where JWM Insulations Ltd is registered
The registered office is in Grimsby (DN37), in the North East Lincolnshire local authority area, Yorkshire and The Humber. Show DN37 0BU on a map.
Other trade companies in DN37
- Cwind.Thompson LtdInstallers
- MC Real Estate Group LtdProperty developers
- JM Industrial Services LtdMachinery repair and installation
- Ben Wilkins Building & Engineering LtdFinishing trades
- BD Roofing and Renewables LtdBuilders
- J S Foster Developments LtdProperty developers
- At Valets LtdMechanics and garages
- Van Equip LtdMotor traders
What happens if JWM Insulations 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 May 2027 to 29 Jun 2027 | £150 |
| 1 to 3 months late | 30 Jun 2027 to 29 Aug 2027 | £375 |
| 3 to 6 months late | 30 Aug 2027 to 29 Nov 2027 | £750 |
| More than 6 months late | From 30 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Aug 2027 | £200 |
| 3 months late | 29 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Aug 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
- 10325678
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 August 2016 (10 years ago)
- Registered office
- 35 Salisbury Avenue, Waltham, Grimsby, DN37 0BU
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 10 August 2026
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 Grimsby
Other active specialist construction companies registered in Grimsby.
- JXC Ltd2025
- K Towill Limited2025
- Kad Construction Services Ltd2026
- Kestrel Access Ltd2024
- Koi Pond UK Ltd2026
- L S Renewables Limited2023
- La24 Solutions Ltd2024
- Lee Smith Builders Limited2022
All specialist construction companies in Grimsby · All trades in Grimsby · Specialist contractors across the UK
Frequently asked questions
When are JWM Insulations Ltd's accounts due?
JWM Insulations Ltd's next accounts are due at Companies House by 29 May 2027 (in 228 days), covering the period to 29 August 2026.
When is JWM Insulations Ltd's CT600 due?
The CT600 for the period to 29 August 2026 is due at HMRC by 29 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 May 2027.
Is JWM Insulations Ltd still trading?
JWM Insulations 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 JWM Insulations Ltd do?
JWM Insulations Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is JWM Insulations Ltd?
JWM Insulations Ltd was incorporated on 11 August 2016, 10 years ago.
Who runs JWM Insulations Ltd?
JWM Insulations Ltd has 1 active director, the longest-serving appointed in Aug 2016. Their names and service addresses are on the Companies House register.
Who owns JWM Insulations Ltd?
One person or company has significant control of JWM Insulations Ltd: an individual (owns 75% or more of the shares).
What is the penalty if JWM Insulations 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 JWM Insulations 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.