- Companies
- Plumbers and heating engineers
- London
- LSS Air Conditioning Ltd
LSS Air Conditioning Ltd
- Company number
- 17031206
- Incorporated
- 13 Feb 2026
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Plumbing, heat and air-conditioning installation
LSS Air Conditioning Ltd is a newly incorporated private limited company registered in London, company number 17031206, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 13 November 2027, and its first CT600 is due at HMRC on 12 February 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.
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Where LSS Air Conditioning Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
- Cardiff Electrical Solutions LtdElectricians
- Edemis Construction LtdBuilders
- Zaylan LtdProperty developers
- Pronto Roofing and Construction LtdRoofers
- Instal Systems LtdPlumbers and heating engineers
- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Shared registered office
2,436 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 LSS Air Conditioning 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 13 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Nov 2027 to 13 Dec 2027 | £150 |
| 1 to 3 months late | 14 Dec 2027 to 13 Feb 2028 | £375 |
| 3 to 6 months late | 14 Feb 2028 to 13 May 2028 | £750 |
| More than 6 months late | From 14 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 17031206
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 February 2026
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (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 London
Other active plumbing and heating companies registered in London.
- Luisen Ltd2026
- Luka Plumbing Services Ltd2026
- Lukes Plumbing Services Ltd2023
- Luna Plumbing Ltd2026
- Lunar Wat£R Ltd2025
- Lushi Plumbing and Heating Ltd2026
- LVB Plumbing Ltd2026
- LVR Facades Ltd2018
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are LSS Air Conditioning Ltd's accounts due?
LSS Air Conditioning Ltd's next accounts are due at Companies House by 13 November 2027 (in 396 days), covering the period to 28 February 2027.
When is LSS Air Conditioning 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 12 February 2027, due by 12 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is LSS Air Conditioning Ltd still trading?
LSS Air Conditioning 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 LSS Air Conditioning Ltd do?
LSS Air Conditioning Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is LSS Air Conditioning Ltd?
LSS Air Conditioning Ltd was incorporated on 13 February 2026, less than a year ago.
What is the penalty if LSS Air Conditioning 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 LSS Air Conditioning 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.