- Company number
- 17337355
- Incorporated
- 13 Jul 2026
- Registered office
- Office 19467 182-184 High Street North, East Ham, London, E6 2JA
- Nature of business
- Construction of domestic buildings
Sam Prox Ltd is a newly incorporated private limited company registered in East Ham, company number 17337355, one of 48 building contractors in East Ham. Its next accounts are due at Companies House on 13 April 2028, and its first CT600 is due at HMRC on 12 July 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 Sam Prox Ltd is registered
The registered office is in East Ham (E6), in the Newham local authority area, London. Show E6 2JA on a map.
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What happens if Sam Prox 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 13 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Apr 2028 to 13 May 2028 | £150 |
| 1 to 3 months late | 14 May 2028 to 13 Jul 2028 | £375 |
| 3 to 6 months late | 14 Jul 2028 to 13 Oct 2028 | £750 |
| More than 6 months late | From 14 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 17337355
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 July 2026
- Registered office
- Office 19467 182-184 High Street North, East Ham, London, E6 2JA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in East Ham
Other active building contractors registered in East Ham.
- Spirit Building and Renovation Ltd2026
- The Allied Stone Ltd2026
- UK Construction and Engineering Ltd2024
- Velthaven Ltd2026
- VRG London Ltd2026
- Warm Cladding Limited2019
- A & D Facades Limited2016
- A & K Cobb (Construction) Limited1992
All building contractors in East Ham · All trades in East Ham · Builders across the UK
Frequently asked questions
When are Sam Prox Ltd's accounts due?
Sam Prox Ltd's next accounts are due at Companies House by 13 April 2028 (in 549 days), covering the period to 31 July 2027.
When is Sam Prox 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 12 July 2027, due by 12 July 2028, and one for the period to 31 July 2027, due by 31 July 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sam Prox Ltd still trading?
Sam Prox 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 Sam Prox Ltd do?
Sam Prox Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Sam Prox Ltd?
Sam Prox Ltd was incorporated on 13 July 2026, less than a year ago.
What is the penalty if Sam Prox 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 Sam Prox 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.