- Companies
- Plumbers and heating engineers
- Reading
- Cosi Cool Ltd
Cosi Cool Ltd
- Company number
- 17419095
- Incorporated
- 25 Aug 2026
- Registered office
- 23 Wood Lane Close, Sonning Common, Reading, RG4 9SP
- Nature of business
- Plumbing, heat and air-conditioning installation
Cosi Cool Ltd is a newly incorporated private limited company registered in Reading, company number 17419095, one of 221 plumbing and heating companies in Reading. Its next accounts are due at Companies House on 25 May 2028, and its first CT600 is due at HMRC on 24 August 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 Cosi Cool Ltd is registered
The registered office is in Reading (RG4), in the South Oxfordshire local authority area, South East. Show RG4 9SP on a map.
Other trade companies in RG4
- Soma Garden LtdLandscapers and gardeners
- Katharos Cleaning Specialist LimitedCleaning companies
- Hadley Home Renovations LimitedBuilders
- Ahmz Motor Group LtdMotor traders
- Green Workspaces LtdLandscapers and gardeners
- Nature Wipes LtdCleaning companies
- Dukes Conservation LimitedSpecialist contractors
- Westfield Building Conservation LtdSpecialist contractors
Also registered at this address
1 other company uses the same registered office as Cosi Cool Ltd.
- Cosi Heat LtdPlumbers and heating engineers
What happens if Cosi Cool 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 25 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 May 2028 to 25 Jun 2028 | £150 |
| 1 to 3 months late | 26 Jun 2028 to 25 Aug 2028 | £375 |
| 3 to 6 months late | 26 Aug 2028 to 25 Nov 2028 | £750 |
| More than 6 months late | From 26 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 17419095
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 August 2026
- Registered office
- 23 Wood Lane Close, Sonning Common, Reading, RG4 9SP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
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 Reading
Other active plumbing and heating companies registered in Reading.
- Cosi Heat Ltd2020
- Covie Home Solutions Ltd2026
- D Martin Welding Ltd2010
- D Rock Plumbing and Heating Limited2024
- D White Heating Limited2017
- David Abraham Plumbing and Heating Limited2007
- Delta Air Conditioning Services (Reading) Ltd2010
- Designn Ltd2026
All plumbing and heating companies in Reading · All trades in Reading · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cosi Cool Ltd's accounts due?
Cosi Cool Ltd's next accounts are due at Companies House by 25 May 2028 (in 590 days), covering the period to 31 August 2027.
When is Cosi Cool 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 24 August 2027, due by 24 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Cosi Cool Ltd still trading?
Cosi Cool 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 Cosi Cool Ltd do?
Cosi Cool Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Cosi Cool Ltd?
Cosi Cool Ltd was incorporated on 25 August 2026, less than a year ago.
What is the penalty if Cosi Cool 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 Cosi Cool 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.