- Company number
- 16331217
- Incorporated
- 20 Mar 20251 year trading
- Registered office
- Suite Ra01 195 - 197, Wood Street, London, London, E17 3NU
- Nature of business
- Construction of commercial buildings; Demolition; Site preparation; Test drilling and boring
Lso Associates Ltd is a 1-year-old private limited company registered in London, company number 16331217, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 20 December 2026, and its first CT600 is due at HMRC on 19 March 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 Lso Associates Ltd is registered
The registered office is in London (E17), in the Waltham Forest local authority area, London. Show E17 3NU on a map.
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Also registered at this address
3 other companies use the same registered office as Lso Associates Ltd.
- Nicollies Property LtdProperty developers
- Oak & Bloom Carpentry LtdJoiners and carpenters
- Primejet Exterior Cleaning LtdCleaning companies
What happens if Lso Associates 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 20 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Dec 2026 to 20 Jan 2027 | £150 |
| 1 to 3 months late | 21 Jan 2027 to 20 Mar 2027 | £375 |
| 3 to 6 months late | 21 Mar 2027 to 20 Jun 2027 | £750 |
| More than 6 months late | From 21 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16331217
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 March 2025 (1 year ago)
- Registered office
- Suite Ra01 195 - 197, Wood Street, London, London, E17 3NU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Demolition (SIC 43110)
Site preparation (SIC 43120)
Test drilling and boring (SIC 43130) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 16 April 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- LT Interior Refurbishment Ltd2025
- LT. Ellis Propco Limited2026
- Ltdesign & Maintenance Ltd2019
- LTG Services Ltd2020
- LTL Builders Ltd2025
- Ltlux Ltd2023
- Ltmfa Limited2020
- LTR Group Limited2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Lso Associates Ltd's accounts due?
Lso Associates Ltd's next accounts are due at Companies House by 20 December 2026 (in 68 days), covering the period to 31 March 2026.
When is Lso Associates 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 19 March 2026, due by 19 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Lso Associates Ltd still trading?
Lso Associates 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 Lso Associates Ltd do?
Lso Associates Ltd is registered under Construction of commercial buildings (SIC 41201); Demolition (SIC 43110); Site preparation (SIC 43120); Test drilling and boring (SIC 43130).
How old is Lso Associates Ltd?
Lso Associates Ltd was incorporated on 20 March 2025, 1 year ago.
What is the penalty if Lso Associates 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 Lso Associates 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.