- Companies
- Plumbers and heating engineers
- Luton
- Lsiw Plumbing Ltd
Lsiw Plumbing Ltd
- Company number
- 16617607
- Incorporated
- 30 Jul 20251 year trading
- Registered office
- Flat 35 Gloucester House, Manor Road, Luton, LU1 3HN
- Nature of business
- Plumbing, heat and air-conditioning installation
Lsiw Plumbing Ltd is a 1-year-old private limited company registered in Luton, company number 16617607, one of 158 plumbing and heating companies in Luton. Its next accounts are due at Companies House on 30 April 2027, and its first CT600 is due at HMRC on 29 July 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 Lsiw Plumbing Ltd is registered
The registered office is in Luton (LU1), in the Luton local authority area, East of England. Show LU1 3HN on a map.
Other trade companies in LU1
- Metalia Plastering LtdPlasterers
- Luton Bodyworks LtdMechanics and garages
- Speedyone LtdGroundworks and demolition
- Varion Construction LtdProperty developers
- Bromhams LtdMotor traders
- Vertex Home Improvements LtdRoofers
- Skillede LtdElectricians
- Avram Cleaning LtdCleaning companies
What happens if Lsiw Plumbing 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16617607
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 July 2025 (1 year ago)
- Registered office
- Flat 35 Gloucester House, Manor Road, Luton, LU1 3HN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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 Luton
Other active plumbing and heating companies registered in Luton.
- Lucky Property Services Limited2008
- Luton Plumbing Centre Limited2020
- M M Pipework Limited2019
- M.A Goflow Plumbing and Gas Engineering Limited2026
- M.V’S Plumbing&Heating Ltd2023
- Mace Ductwork Limited2006
- MLK Gas & Plumbing Ltd2024
- MLK Plumbing & Heating Ltd2018
All plumbing and heating companies in Luton · All trades in Luton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Lsiw Plumbing Ltd's accounts due?
Lsiw Plumbing Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Lsiw Plumbing 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 29 July 2026, due by 29 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Lsiw Plumbing Ltd still trading?
Lsiw Plumbing Ltd is listed as active on the Companies House register (checked 13 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 Lsiw Plumbing Ltd do?
Lsiw Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Lsiw Plumbing Ltd?
Lsiw Plumbing Ltd was incorporated on 30 July 2025, 1 year ago.
What is the penalty if Lsiw Plumbing 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 Lsiw Plumbing Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.