- Companies
- Civil engineering
- Greenford
- JB Smart Services Ltd
JB Smart Services Ltd
- Company number
- 16993885
- Incorporated
- 28 Jan 2026
- Registered office
- 14 Astha Court, Kings Avenue, Greenford, UB6 9FG
- Nature of business
- Construction of utility projects for electricity and telecommunications; Electrical installation
JB Smart Services Ltd is a newly incorporated private limited company registered in Greenford, company number 16993885, one of 24 civil engineering contractors in Greenford. Its next accounts are due at Companies House on 28 October 2027, and its first CT600 is due at HMRC on 27 January 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where JB Smart Services Ltd is registered
The registered office is in Greenford (UB6), in the Ealing local authority area, London. Show UB6 9FG on a map.
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What happens if JB Smart Services 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 28 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Oct 2027 to 28 Nov 2027 | £150 |
| 1 to 3 months late | 29 Nov 2027 to 28 Jan 2028 | £375 |
| 3 to 6 months late | 29 Jan 2028 to 28 Apr 2028 | £750 |
| More than 6 months late | From 29 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16993885
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2026
- Registered office
- 14 Astha Court, Kings Avenue, Greenford, UB6 9FG
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Electrical installation (SIC 43210) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
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 Greenford
Other active civil engineering contractors registered in Greenford.
- KS Building London Ltd2019
- Lisfannon Ltd2020
- Matlock Homes Limited1992
- Motana Limited2001
- Natty Gulf Limited2024
- R&F Construction Ltd2025
- Rafal Bespoke Renovations Ltd2026
- Rdwld Ltd2015
All civil engineering contractors in Greenford · All trades in Greenford · Civil engineering across the UK
Frequently asked questions
When are JB Smart Services Ltd's accounts due?
JB Smart Services Ltd's next accounts are due at Companies House by 28 October 2027 (in 381 days), covering the period to 31 January 2027.
When is JB Smart Services Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 27 January 2027, due by 27 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is JB Smart Services Ltd still trading?
JB Smart Services 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 JB Smart Services Ltd do?
JB Smart Services Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Electrical installation (SIC 43210).
How old is JB Smart Services Ltd?
JB Smart Services Ltd was incorporated on 28 January 2026, less than a year ago.
What is the penalty if JB Smart Services 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 JB Smart Services 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.