- Companies
- Builders
- Wolverhampton
- Square Line Ltd
Square Line Ltd
- Company number
- 13571002
- Incorporated
- 17 Aug 20215 years trading
- Registered office
- 30 Jennie Lee Avenue, Wolverhampton, WV11 3LZ
- Nature of business
- Construction of domestic buildings; Plumbing, heat and air-conditioning installation; Other construction installation; Other specialised construction activities n.e.c.
Square Line Ltd is a 5-year-old private limited company registered in Wolverhampton, company number 13571002, one of 424 building contractors in Wolverhampton. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Square Line LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £5,502 (+17.5%) on the year before, to £37K.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £29K against £878 owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2022 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £37K | £29K | £878 | 1 | |
| 31 Mar 2025 | £32K | £21K | £500 | 1 | |
| 31 Mar 2024 | £36K | £46K | £6,484 | 1 | |
| 31 Mar 2023 | £8,763 | £15K | £6,612 | 1 | |
| 31 Mar 2022 | £1,456 | £3,118 | £1,514 | 1 |
Where Square Line Ltd is registered
The registered office is in Wolverhampton (WV11), in the Wolverhampton local authority area, West Midlands. Show WV11 3LZ on a map.
Other trade companies in WV11
- Smart Afford LtdElectricians
- Onlyvans Telford LimitedMotor traders
- Kaizen Motorsport LimitedMechanics and garages
- Gbkleen LimitedCleaning companies
- Aan Works LtdPlumbers and heating engineers
- Jia Production LtdMachinery repair and installation
- CQ Roofing & General Builders LimitedInstallers
- Ann Works LtdBuilders
What happens if Square Line 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 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
- 13571002
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 August 2021 (5 years ago)
- Registered office
- 30 Jennie Lee Avenue, Wolverhampton, WV11 3LZ
- Nature of business
- Construction of domestic buildings (SIC 41202)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 16 August 2026
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 Wolverhampton
Other active building contractors registered in Wolverhampton.
- SR Real Estate and Investor Ltd2026
- SSG Construction Ltd2025
- SSJ Design Ltd2025
- Stafford Investments Ltd2025
- Stoica F Ltd2025
- Strawmoor Developments Limited2026
- Sukhwinder Singh Construction Ltd2021
- Sumi Foods Limited2025
All building contractors in Wolverhampton · All trades in Wolverhampton · Builders across the UK
Frequently asked questions
When are Square Line Ltd's accounts due?
Square Line Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Square Line Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Square Line Ltd still trading?
Square Line 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 Square Line Ltd do?
Square Line Ltd is registered under Construction of domestic buildings (SIC 41202); Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999).
How old is Square Line Ltd?
Square Line Ltd was incorporated on 17 August 2021, 5 years ago.
What is the penalty if Square Line 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 Square Line 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.