- Companies
- Plumbers and heating engineers
- Bristol
- LTH Mechanical Limited
LTH Mechanical Limited
- Company number
- 16643702
- Incorporated
- 11 Aug 20251 year trading
- Registered office
- 87 High Street, Hanham, Bristol, Gloucestershire, BS15 3QG
- Nature of business
- Plumbing, heat and air-conditioning installation
LTH Mechanical Limited is a 1-year-old private limited company registered in Bristol, company number 16643702, one of 432 plumbing and heating companies in Bristol. Its next accounts are due at Companies House on 11 May 2027, and its first CT600 is due at HMRC on 10 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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Where LTH Mechanical Limited is registered
The registered office is in Bristol (BS15), in the South Gloucestershire local authority area, South West. Show BS15 3QG on a map.
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Shared registered office
33 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if LTH Mechanical Limited 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 11 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 May 2027 to 11 Jun 2027 | £150 |
| 1 to 3 months late | 12 Jun 2027 to 11 Aug 2027 | £375 |
| 3 to 6 months late | 12 Aug 2027 to 11 Nov 2027 | £750 |
| More than 6 months late | From 12 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
- 16643702
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 August 2025 (1 year ago)
- Registered office
- 87 High Street, Hanham, Bristol, Gloucestershire, BS15 3QG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 August 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.
Similar companies in Bristol
Other active plumbing and heating companies registered in Bristol.
- Luka Plumbing Ltd2025
- M G Plumbing Limited2002
- M W Bayfield Limited2005
- M. B. Air UK Ltd2006
- Maintenance Response Ltd2019
- Mango Home Improvements Ltd2011
- Map Technical SW Ltd2014
- Matthew Lane Limited2013
All plumbing and heating companies in Bristol · All trades in Bristol · Plumbers and heating engineers across the UK
Frequently asked questions
When are LTH Mechanical Limited's accounts due?
LTH Mechanical Limited's next accounts are due at Companies House by 11 May 2027 (in 211 days), covering the period to 31 August 2026.
When is LTH Mechanical Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 10 August 2026, due by 10 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 LTH Mechanical Limited still trading?
LTH Mechanical Limited 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 LTH Mechanical Limited do?
LTH Mechanical Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is LTH Mechanical Limited?
LTH Mechanical Limited was incorporated on 11 August 2025, 1 year ago.
What is the penalty if LTH Mechanical Limited 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 LTH Mechanical Limited 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.