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- Jam Co1 Ltd
Company profile · Property developers
Jam Co1 Ltd
Jam Co1 Ltd is a newly incorporated private limited company registered in Swansea, company number 17147900, one of 273 property development companies in Swansea. Its next accounts are due at Companies House on 9 January 2028, and its first CT600 is due at HMRC on 8 April 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 Jam Co1 Ltd is registered
The registered office is in Swansea (SA3), in the Swansea local authority area, Wales. Show SA3 5EF on a map.
Other trade companies in SA3
- Laxlets LtdProperty developers
- Soulterra LtdProperty developers
- JCR Co1 LtdBuilders
- Gower Refrigeration and Air Conditioning LtdPlumbers and heating engineers
- JH Energy Engineering LtdProperty developers
- GHL CC LtdFloor and wall tilers
- Greenwarm CyfSpecialist contractors
- Morgan Building Contractors LtdBuilders
Also registered at this address
3 other companies use the same registered office as Jam Co1 Ltd.
- Gower Renewables LimitedElectricians
- JCR & Ajr Holdings LtdProperty developers
- JCR Co1 LtdBuilders
What happens if Jam Co1 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 9 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Jan 2028 to 9 Feb 2028 | £150 |
| 1 to 3 months late | 10 Feb 2028 to 9 Apr 2028 | £375 |
| 3 to 6 months late | 10 Apr 2028 to 9 Jul 2028 | £750 |
| More than 6 months late | From 10 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 17147900
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 April 2026
- Registered office
- 69 Westport Avenue, Mayals, Swansea, SA3 5EF
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Swansea
Other active property development companies registered in Swansea.
- James Thomas Builders Limited2012
- Jaxx Bay Limited1999
- Jaxx Harbour Limited2010
- Jay Harris Boxing, Fitness and Building Limited2025
- JCR & Ajr Holdings Ltd2025
- JK Renovations and Developments Ltd2024
- Jle Companies Limited2019
- JP Construction & Development Ltd2010
All property development companies in Swansea · All trades in Swansea · Property developers across the UK
Frequently asked questions
When are Jam Co1 Ltd's accounts due?
Jam Co1 Ltd's next accounts are due at Companies House by 9 January 2028 (in 454 days), covering the period to 30 April 2027.
When is Jam Co1 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 8 April 2027, due by 8 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Jam Co1 Ltd still trading?
Jam Co1 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 Jam Co1 Ltd do?
Jam Co1 Ltd is registered under Development of building projects (SIC 41100).
How old is Jam Co1 Ltd?
Jam Co1 Ltd was incorporated on 9 April 2026, less than a year ago.
What is the penalty if Jam Co1 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 Jam Co1 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.