Caldav Ltd
- Company number
- 17018714
- Incorporated
- 7 Feb 2026
- Registered office
- 8 Weston Grove Road, Southampton, SO19 9EL
- Nature of business
- Plumbing, heat and air-conditioning installation
Caldav Ltd is a newly incorporated private limited company registered in Southampton, company number 17018714, one of 246 plumbing and heating companies in Southampton. Its next accounts are due at Companies House on 7 November 2027, and its first CT600 is due at HMRC on 6 February 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.
Is this your company?
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Where Caldav Ltd is registered
The registered office is in Southampton (SO19), in the Southampton local authority area, South East. Show SO19 9EL on a map.
Other trade companies in SO19
- 4LK Cleaning Company LtdCleaning companies
- Nest Path Properties LimitedBuilders
- Dautaj Groundworks LtdBuilders
- Craftline Carpentry Services LtdJoiners and carpenters
- Agape-Wise LimitedCleaning companies
- Cool Enterprises LtdPlumbers and heating engineers
- Jmac Carpentry & Building LtdPlasterers
- Auto Motive Dismantling - Amd LtdMotor traders
What happens if Caldav 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 7 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Nov 2027 to 7 Dec 2027 | £150 |
| 1 to 3 months late | 8 Dec 2027 to 7 Feb 2028 | £375 |
| 3 to 6 months late | 8 Feb 2028 to 7 May 2028 | £750 |
| More than 6 months late | From 8 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 17018714
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 February 2026
- Registered office
- 8 Weston Grove Road, Southampton, SO19 9EL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (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 Southampton
Other active plumbing and heating companies registered in Southampton.
- Castleway Limited1994
- CF Heating Limited2014
- CH4 Services Limited2014
- Chilor Group Ltd2020
- City Plumbing & Heating Southern Ltd2021
- Climate Change Services Ltd2020
- Climate Gas Ltd2012
- Coles Plumbing and Heating Ltd2025
All plumbing and heating companies in Southampton · All trades in Southampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Caldav Ltd's accounts due?
Caldav Ltd's next accounts are due at Companies House by 7 November 2027 (in 390 days), covering the period to 28 February 2027.
When is Caldav 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 6 February 2027, due by 6 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Caldav Ltd still trading?
Caldav 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 Caldav Ltd do?
Caldav Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Caldav Ltd?
Caldav Ltd was incorporated on 7 February 2026, less than a year ago.
What is the penalty if Caldav 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 Caldav 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.