- Companies
- Plumbers and heating engineers
- London
- Co2 Reduction Ltd
Co2 Reduction Ltd
- Company number
- 13713445
- Incorporated
- 30 Oct 20214 years trading
- Registered office
- Golden Cross House, 8 Duncannon Street, London, WC2N 4JF
- Nature of business
- Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.; Public relations and communications activities; Combined office administrative service activities
Co2 Reduction Ltd is a 4-year-old private limited company registered in London, company number 13713445, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 Co2 Reduction 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 down £363K (-231.9%) on the year before, to -£206K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £82K against £338K owed within a year: 0.2 times cover.
- 10 employees on average, up from 5 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | -£206K | £0 | £82K | £338K | 10 |
| 31 Oct 2024 | £156K | £163K | £387K | £290K | 5 |
| 31 Oct 2023 | £44K | £120K | £77K | 3 | |
| 31 Oct 2022 | £45 | £11K | £13K | 0 |
Who runs and owns Co2 Reduction Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| M*** H*** | Director | Oct 2021 |
Person with significant control
Charges (secured borrowing)
1 of 1 registered charge is outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Lloyds Bank PLC | Outstanding | Nov 2025 |
Where Co2 Reduction Ltd is registered
The registered office is in London (WC2N), in the Westminster local authority area, London. Show WC2N 4JF on a map.
Other trade companies in WC2N
- London Plumbing & Drainage Maintenance LimitedPlumbers and heating engineers
- LJD Projects LimitedCivil engineering
- Refuge Construction Group LimitedBuilders
- Adelphi Contractors LimitedBuilders
- Bretby Autobahn LimitedMotor traders
- Isofit Mechanical Services LtdInstallers
- CMCV Mechanical LimitedPlumbers and heating engineers
- Indtech Electrical Consultants LtdElectricians
Also registered at this address
2 other companies use the same registered office as Co2 Reduction Ltd.
- Boarway Builders LtdBuilders
- Creystone Group LtdBuilders
What happens if Co2 Reduction 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 13713445
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 October 2021 (4 years ago)
- Registered office
- Golden Cross House, 8 Duncannon Street, London, WC2N 4JF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999)
Public relations and communications activities (SIC 70210)
Combined office administrative service activities (SIC 82110) - Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 8 August 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in London
Other active plumbing and heating companies registered in London.
- Colak Maintenance Ltd2021
- Coldblow Services Ltd2026
- Coldrooms Cooling Ltd2023
- Coldtek Ltd2024
- Coleman Pipefitting Solutions Limited2017
- Collide Group Ltd2026
- Colosseum Property Services Ltd2024
- Colosseum Property Solutions Ltd2022
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Co2 Reduction Ltd's accounts due?
Co2 Reduction Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Co2 Reduction Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Co2 Reduction Ltd still trading?
Co2 Reduction Ltd is listed as active on the Companies House register (checked 12 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 Co2 Reduction Ltd do?
Co2 Reduction Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999); Public relations and communications activities (SIC 70210); Combined office administrative service activities (SIC 82110).
How old is Co2 Reduction Ltd?
Co2 Reduction Ltd was incorporated on 30 October 2021, 4 years ago.
Who runs Co2 Reduction Ltd?
Co2 Reduction Ltd has 1 active director, the longest-serving appointed in Oct 2021. Their names and service addresses are on the Companies House register.
Who owns Co2 Reduction Ltd?
One person or company has significant control of Co2 Reduction Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Co2 Reduction 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 Co2 Reduction Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.