- Companies
- Cleaning companies
- Newhaven
- J M Brown Ltd
J M Brown Ltd
- Company number
- 12377851
- Incorporated
- 24 Dec 20196 years trading
- Registered office
- Unit S Rich Industrial Estate, Avis Way, Newhaven, East Sussex, BN9 0DU
- Nature of business
- Other building and industrial cleaning activities
J M Brown Ltd is a 6-year-old private limited company registered in Newhaven, company number 12377851, one of 13 cleaning companies in Newhaven. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £72K (+15.8%) on the year before, to £528K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £604K against £177K owed within a year: 3.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £528K | £401K | £604K | £177K | 2 |
| 31 Dec 2024 | £456K | £304K | £580K | £208K | 2 |
| 31 Dec 2023 | £266K | £209K | £341K | £133K | 2 |
| 31 Dec 2022 | £192K | £136K | £266K | £111K | 2 |
| 31 Dec 2021 | £147K | £102K | £283K | £163K | 2 |
| 31 Dec 2020 | £70K | £74K | £147K | £96K | 2 |
Where J M Brown Ltd is registered
The registered office is in Newhaven (BN9), in the Lewes local authority area, South East. Show BN9 0DU on a map.
Other trade companies in BN9
- Lochwood Joinery and Construction LtdBuilders
- Motorcircle LtdMotor traders
- T.D Multi-Trade and Bathroom Specialists LtdPlumbers and heating engineers
- Jamie Sullivan Groundworks & Paving LimitedCivil engineering
- R Giggs Electrical LtdElectricians
- Group 333 LimitedSpecialist contractors
- Rockhopper Developments LtdInstallers
- Agm Hrisbuild LtdPainters and decorators
What happens if J M Brown 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 12377851
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 December 2019 (6 years ago)
- Registered office
- Unit S Rich Industrial Estate, Avis Way, Newhaven, East Sussex, BN9 0DU
- Nature of business
- Other building and industrial cleaning activities (SIC 81229)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 23 December 2025
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Newhaven
Other active cleaning companies registered in Newhaven.
- Keep IT Clean Ltd2008
- Peppys General Cleaning Limited2025
- Sussex Blast Cleaning Limited2000
- Sussex Blast Cleaning Site Ltd2015
- Sussex Cleaning Company Limited2020
- Thedonofdetail Ltd2025
- Carealign Support Ltd.2025
- Clean by the C Ltd2025
All cleaning companies in Newhaven · All trades in Newhaven · Cleaning companies across the UK
Frequently asked questions
When are J M Brown Ltd's accounts due?
J M Brown Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is J M Brown Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is J M Brown Ltd still trading?
J M Brown 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 J M Brown Ltd do?
J M Brown Ltd is registered under Other building and industrial cleaning activities (SIC 81229).
How old is J M Brown Ltd?
J M Brown Ltd was incorporated on 24 December 2019, 6 years ago.
What is the penalty if J M Brown 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 J M Brown 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.