- Companies
- Specialist contractors
- Southport
- Site Testing Services (National) Ltd
Site Testing Services (National) Ltd
- Company number
- 16674162
- Incorporated
- 27 Aug 20251 year trading
- Registered office
- 32 the Ridings, Southport, PR9 8NG
- Nature of business
- Other specialised construction activities n.e.c.
Site Testing Services (National) Ltd is a 1-year-old private limited company registered in Southport, company number 16674162, one of 57 specialist construction companies in Southport. Its next accounts are due at Companies House on 27 May 2027, and its first CT600 is due at HMRC on 26 August 2027.
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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Who runs and owns Site Testing Services (National) Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** S*** | Director | Sep 2025 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| P*** S*** | Director | Aug 2025 | Jan 2026 |
Person with significant control
Where Site Testing Services (National) Ltd is registered
The registered office is in Southport (PR9), in the Sefton local authority area, North West. Show PR9 8NG on a map.
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What happens if Site Testing Services (National) 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 27 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 May 2027 to 27 Jun 2027 | £150 |
| 1 to 3 months late | 28 Jun 2027 to 27 Aug 2027 | £375 |
| 3 to 6 months late | 28 Aug 2027 to 27 Nov 2027 | £750 |
| More than 6 months late | From 28 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 16674162
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 August 2025 (1 year ago)
- Registered office
- 32 the Ridings, Southport, PR9 8NG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 26 August 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Southport
Other active specialist construction companies registered in Southport.
- Soudure Engineering Services Limited2006
- Sure Rope Access Ltd2025
- Taylor Hunt Limited2024
- TFG Sealants Ltd2018
- The Southport Gate Co. Limited2001
- This and That With Matt Ltd2023
- Three Suites Ltd2025
- VSBC Ltd2025
All specialist construction companies in Southport · All trades in Southport · Specialist contractors across the UK
Frequently asked questions
When are Site Testing Services (National) Ltd's accounts due?
Site Testing Services (National) Ltd's next accounts are due at Companies House by 27 May 2027 (in 226 days), covering the period to 31 August 2026.
When is Site Testing Services (National) 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 26 August 2026, due by 26 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Site Testing Services (National) Ltd still trading?
Site Testing Services (National) 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 Site Testing Services (National) Ltd do?
Site Testing Services (National) Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Site Testing Services (National) Ltd?
Site Testing Services (National) Ltd was incorporated on 27 August 2025, 1 year ago.
Who runs Site Testing Services (National) Ltd?
Site Testing Services (National) Ltd has 1 active director, the longest-serving appointed in Sep 2025. Their names and service addresses are on the Companies House register.
Who owns Site Testing Services (National) Ltd?
One person or company has significant control of Site Testing Services (National) Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Site Testing Services (National) 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 Site Testing Services (National) 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.