- Companies
- Specialist contractors
- Harlow
- Bsir Limited
Company profile · Specialist contractors
Bsir Limited
Bsir Limited is a 11-year-old private limited company registered in Harlow, company number 09652949, one of 116 specialist construction companies in Harlow. Its next accounts are due at Companies House on 29 March 2027, and the CT600 for the period to 29 June 2026 is due at HMRC on 29 June 2027.
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 Bsir LimitedOr 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.
Financial snapshot, 2025
From the balance sheet at 30 June 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Bsir Limited over the years
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 down £1,535 (-20.5%) on the year before, to -£9,026.
- Net assets rose in 1 of 9 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 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | -£9,026 | £48K | 0 | ||
| 30 Jun 2024 | -£7,491 | £50K | 0 | ||
| 30 Jun 2023 | -£5,269 | £45K | £50K | 1 | |
| 30 Jun 2022 | -£2,544 | £42K | £44K | 1 | |
| 30 Jun 2021 | £105 | £44K | £44K | 2 | |
| 30 Jun 2020 | £207 | £43K | £42K | 2 | |
| 30 Jun 2019 | £430 | £23K | £21K | 2 | |
| 30 Jun 2018 | -£8,145 | £10K | £17K | 2 | |
| 30 Jun 2017 | £9 | £12K | £11K | ||
| 30 Jun 2016 | £20 | £14K | £13K |
Where Bsir Limited is registered
The registered office is in Harlow (CM19), in the Harlow local authority area, East of England. Show CM19 5RT on a map.
Other trade companies in CM19
- Precision Refits LtdSpecialist contractors
- Solido London LimitedInstallers
- LC Painters LimitedPainters and decorators
- Paul the Gas LtdPlumbers and heating engineers
- Chun-Keys Watches LtdRepair services
- Vpa Detailing and Valeting LimitedCleaning companies
- Herd Property Services LtdFinishing trades
- Crisp & Clean Services LtdCleaning companies
What happens if Bsir Limited 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Mar 2027 to 29 Apr 2027 | £150 |
| 1 to 3 months late | 30 Apr 2027 to 29 Jun 2027 | £375 |
| 3 to 6 months late | 30 Jun 2027 to 29 Sep 2027 | £750 |
| More than 6 months late | From 30 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jun 2027 | £200 |
| 3 months late | 29 Sep 2027 | another £200 |
| 6 months late | 29 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jun 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
- 09652949
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 June 2015 (11 years ago)
- Registered office
- 15 Sycamore Field, Harlow, Essex, CM19 5RT
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 23 June 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 Harlow
Other active specialist construction companies registered in Harlow.
- Charlie Welding & Fabrication Ltd2024
- Constrail Group Ltd2024
- Control Wise Ltd2025
- CSC Buildings Ltd2009
- D and D Glassworks Ltd2025
- D F F Rendering Solutions Ltd2019
- Danny Cadman Ltd2014
- DB Preservation Ltd2026
All specialist construction companies in Harlow · All trades in Harlow · Specialist contractors across the UK
Frequently asked questions
When are Bsir Limited's accounts due?
Bsir Limited's next accounts are due at Companies House by 29 March 2027 (in 168 days), covering the period to 29 June 2026.
When is Bsir Limited's CT600 due?
The CT600 for the period to 29 June 2026 is due at HMRC by 29 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 March 2027.
Is Bsir Limited still trading?
Bsir Limited 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 Bsir Limited do?
Bsir Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Bsir Limited?
Bsir Limited was incorporated on 23 June 2015, 11 years ago.
What is the penalty if Bsir Limited 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 Bsir Limited 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.