- Companies
- Civil engineering
- London
- Cannoncomm Ltd
Cannoncomm Ltd
- Company number
- 10261888
- Incorporated
- 5 Jul 201610 years trading
- Registered office
- Blake Tower, Floor LG 12,, Barbican, London, EC2Y 8AF
- Nature of business
- Construction of utility projects for electricity and telecommunications; Site preparation; Other building completion and finishing; Other telecommunications activities
Cannoncomm Ltd is a 10-year-old private limited company registered in London, company number 10261888, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 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 Cannoncomm LtdOr 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.
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 £10K (+31.8%) on the year before, to £43K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £63K against £61K owed within a year: 1.0 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £43K | £63K | £61K | 1 | |
| 30 Jun 2024 | £33K | £38K | £30K | 2 | |
| 30 Jun 2023 | £18K | £39K | £30K | 5 | |
| 30 Jun 2022 | -£11K | £39K | £29K | 5 | |
| 30 Jun 2021 | -£27K | £16K | £22K | 5 | |
| 5 Jul 2020 | £6,944 | £22K | £43K | 5 | |
| 5 Jul 2019 | -£29K | -£34K | £39K | 5 | |
| 5 Jul 2018 | -£32K | -£25K | £26K | 5 | |
| 5 Jul 2017 | £41K | £16K | £42K | £5,005 |
Where Cannoncomm Ltd is registered
The registered office is in London (EC2Y), in the City of London local authority area, London. Show EC2Y 8AF on a map.
Other trade companies in EC2Y
- Eco Track & Access LtdSpecialist contractors
- NJ Groundworks & Landscaping LtdCivil engineering
- Cannon Connect LtdCivil engineering
- Landform William Road LimitedProperty developers
- Franklin Building LtdSpecialist contractors
- K Mackie Windows and Doors LtdGlaziers
- V1 Scaffolding LtdFinishing trades
- Nigel Plumb Windows LtdGlaziers
Also registered at this address
12 other companies use the same registered office as Cannoncomm Ltd.
- Ace Cleaning Solutions LtdCleaning companies
- Anthony Clack Electrical LtdElectricians
- Cannon Connect LtdCivil engineering
- Clearwater Connections LtdCivil engineering
- DPJ Scaffolding LtdFinishing trades
- Franklin Building LtdSpecialist contractors
- Julian Lambert Builder LtdSpecialist contractors
- K Mackie Windows and Doors LtdGlaziers
- Neil Graver Glazing LtdInstallers
- Nigel Plumb Windows LtdGlaziers
- NJ Groundworks & Landscaping LtdCivil engineering
- Proe Plastering LtdPlasterers
What happens if Cannoncomm 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 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
- 10261888
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 July 2016 (10 years ago)
- Registered office
- Blake Tower, Floor LG 12,, Barbican, London, EC2Y 8AF
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Site preparation (SIC 43120)
Other building completion and finishing (SIC 43390)
Other telecommunications activities (SIC 61900) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 21 September 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 London
Other active civil engineering contractors registered in London.
- Capital Construction (Southern) Limited1993
- Capital Land Advanced Soil Stabilisation Limited2021
- Capital Land Civil Engineering Ltd2014
- Carbonpave-UK Ltd2026
- Carl Construction Limited2016
- Carno Connect Ltd2025
- CBR Contracting Limited2025
- CCD Building & Maintenance Ltd2022
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Cannoncomm Ltd's accounts due?
Cannoncomm Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Cannoncomm Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Cannoncomm Ltd still trading?
Cannoncomm 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 Cannoncomm Ltd do?
Cannoncomm Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Site preparation (SIC 43120); Other building completion and finishing (SIC 43390); Other telecommunications activities (SIC 61900).
How old is Cannoncomm Ltd?
Cannoncomm Ltd was incorporated on 5 July 2016, 10 years ago.
What is the penalty if Cannoncomm 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 Cannoncomm 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.