- Companies
- Civil engineering
- Bromley
- JSR Customise Ltd
JSR Customise Ltd
- Company number
- 15351768
- Incorporated
- 14 Dec 20232 years trading
- Registered office
- 4 Ethelbert Road, Bromley, BR1 1HZ
- Nature of business
- Construction of utility projects for electricity and telecommunications; Other construction installation
JSR Customise Ltd is a 2-year-old private limited company registered in Bromley, company number 15351768, one of 40 civil engineering contractors in Bromley. 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 £9,268 (+110.2%) on the year before, to £18K.
- Current assets of £34K against £17K owed within a year: 2.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £18K | £34K | £17K | 1 | |
| 31 Dec 2024 | £8,411 | £20K | £12K | 1 |
Where JSR Customise Ltd is registered
The registered office is in Bromley (BR1), in the Bromley local authority area, London. Show BR1 1HZ on a map.
Other trade companies in BR1
- Selvaa LimitedRepair services
- E.Esoteric LimitedElectricians
- Ideal Move Properties LimitedProperty developers
- Slick Moves London LtdMachinery repair and installation
- Greenwoods Home & Garden Services LimitedCleaning companies
- Primecroft Group LtdBuilders
- Rapid Emergency Plumbers London LtdPlumbers and heating engineers
- Faspen LtdCleaning companies
What happens if JSR Customise 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
- 15351768
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 December 2023 (2 years ago)
- Registered office
- 4 Ethelbert Road, Bromley, BR1 1HZ
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Other construction installation (SIC 43290) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 11 January 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Bromley
Other active civil engineering contractors registered in Bromley.
- Mamdev UK Ltd2026
- NCC South East Limited2002
- Nek Consultants Limited2011
- Noruega Mec Ltd2019
- Richard99 Ltd2019
- Scansky Engineering Ltd2015
- Spillways Limited2014
- Stamford Star Limited2024
All civil engineering contractors in Bromley · All trades in Bromley · Civil engineering across the UK
Frequently asked questions
When are JSR Customise Ltd's accounts due?
JSR Customise Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is JSR Customise 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 JSR Customise Ltd still trading?
JSR Customise 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 JSR Customise Ltd do?
JSR Customise Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Other construction installation (SIC 43290).
How old is JSR Customise Ltd?
JSR Customise Ltd was incorporated on 14 December 2023, 2 years ago.
What is the penalty if JSR Customise 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 JSR Customise 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.