- Companies
- Plumbers and heating engineers
- Shildon
- Ahs (Site Services) Ltd
Ahs (Site Services) Ltd
- Company number
- 16576734
- Incorporated
- 11 Jul 20251 year trading
- Registered office
- 3-5 Furnace Industrial Estate, Shildon, County Durham, DL4 1QB
- Nature of business
- Plumbing, heat and air-conditioning installation
Ahs (Site Services) Ltd is a 1-year-old private limited company registered in Shildon, company number 16576734, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 December 2025, as filed at Companies House.
Public contracts won
Ahs (Site Services) Ltd has one public sector contract award on record; the ones with their own published value total £135K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| York Teaching Hospital Facilities Management LLP | Air Handling Unit | £135K | 18 Mar 2026 |
Where Ahs (Site Services) Ltd is registered
The registered office is in Shildon (DL4), in the County Durham local authority area, North East. Show DL4 1QB on a map.
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Also registered at this address
1 other company uses the same registered office as Ahs (Site Services) Ltd.
- Ahs (Specialist Services) LtdPlumbers and heating engineers
What happens if Ahs (Site Services) 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16576734
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 July 2025 (1 year ago)
- Registered office
- 3-5 Furnace Industrial Estate, Shildon, County Durham, DL4 1QB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 10 July 2026
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.
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Other active plumbing and heating companies registered in Shildon.
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Frequently asked questions
When are Ahs (Site Services) Ltd's accounts due?
Ahs (Site Services) Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Ahs (Site Services) Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Ahs (Site Services) Ltd still trading?
Ahs (Site Services) 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 Ahs (Site Services) Ltd do?
Ahs (Site Services) Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Ahs (Site Services) Ltd?
Ahs (Site Services) Ltd was incorporated on 11 July 2025, 1 year ago.
Has Ahs (Site Services) Ltd won public sector contracts?
Yes. Ahs (Site Services) Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £135K), most recently from YORK TEACHING HOSPITAL FACILITIES MANAGEMENT LLP.
What is the penalty if Ahs (Site Services) 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 Ahs (Site Services) 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.