- Companies
- Specialist contractors
- London
- Conisbee Engineers Ltd
Conisbee Engineers Ltd
- Company number
- 15914879
- Incorporated
- 23 Aug 20242 years trading
- Registered office
- 1-5 Offord Street, London, N1 1DH
- Nature of business
- Other specialised construction activities n.e.c.
Conisbee Engineers Ltd is a 2-year-old private limited company registered in London, company number 15914879, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 unchanged on the year before, at £898K.
- 7 employees on average during the year.
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £898K | £153 | £158 | 7 | |
| 31 Mar 2025 | £898K | £153 | 7 |
Public contracts won
Conisbee Engineers Ltd has one public sector contract award on record; the ones with their own published value total £18K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Drayton Parish Council | Refurbishment of King George V Cricket Pavilion | £18K | 10 Aug 2026 |
Where Conisbee Engineers Ltd is registered
The registered office is in London (N1), in the Islington local authority area, London. Show N1 1DH on a map.
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- Magic Door Services LimitedMachinery repair and installation
What happens if Conisbee Engineers 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 15914879
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 August 2024 (2 years ago)
- Registered office
- 1-5 Offord Street, London, N1 1DH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 22 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 London
Other active specialist construction companies registered in London.
- Connect & Repair Ltd2026
- Connect Housing (North East) Ltd2026
- Connect Sprinkler System Limited2022
- Connect T M Holdings Limited2011
- Conport Structures Limited1965
- Conrad John Limited2021
- Conscons Ltd2021
- Conserve Consult Limited2025
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Conisbee Engineers Ltd's accounts due?
Conisbee Engineers Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Conisbee Engineers Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Conisbee Engineers Ltd still trading?
Conisbee Engineers 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 Conisbee Engineers Ltd do?
Conisbee Engineers Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Conisbee Engineers Ltd?
Conisbee Engineers Ltd was incorporated on 23 August 2024, 2 years ago.
Has Conisbee Engineers Ltd won public sector contracts?
Yes. Conisbee Engineers Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £18K), most recently from Drayton Parish Council.
What is the penalty if Conisbee Engineers 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 Conisbee Engineers 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.