- Companies
- Specialist contractors
- London
- Tam Utilities Ltd
Tam Utilities Ltd
- Company number
- 17109888
- Incorporated
- 23 Mar 2026
- Registered office
- Flat A, 3 Summerhill Road, London, N15 4HF
- Nature of business
- Other specialised construction activities n.e.c.
Tam Utilities Ltd is a newly incorporated private limited company registered in London, company number 17109888, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 23 December 2027, and its first CT600 is due at HMRC on 22 March 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 Tam Utilities Ltd is registered
The registered office is in London (N15), in the Haringey local authority area, London. Show N15 4HF on a map.
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What happens if Tam Utilities 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 23 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 24 Dec 2027 to 23 Jan 2028 | £150 |
| 1 to 3 months late | 24 Jan 2028 to 23 Mar 2028 | £375 |
| 3 to 6 months late | 24 Mar 2028 to 23 Jun 2028 | £750 |
| More than 6 months late | From 24 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17109888
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 March 2026
- Registered office
- Flat A, 3 Summerhill Road, London, N15 4HF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 London
Other active specialist construction companies registered in London.
- Tandem London Ltd2022
- Tandem Set and Scenery Ltd2014
- Tar Utilities Ltd2025
- Tardea Services Limited2017
- Tarfix Surfacing Ltd2025
- Tariqrail2 Ltd2024
- Tarolta Engineers & Contractors Ltd2025
- Tarrant Group Ltd2020
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Tam Utilities Ltd's accounts due?
Tam Utilities Ltd's next accounts are due at Companies House by 23 December 2027 (in 436 days), covering the period to 31 March 2027.
When is Tam Utilities 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 22 March 2027, due by 22 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Tam Utilities Ltd still trading?
Tam Utilities 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 Tam Utilities Ltd do?
Tam Utilities Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Tam Utilities Ltd?
Tam Utilities Ltd was incorporated on 23 March 2026, less than a year ago.
What is the penalty if Tam Utilities 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 Tam Utilities 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.