- Companies
- Groundworks and demolition
- Harrow
- Startline Services Ltd
Startline Services Ltd
- Company number
- 12762897
- Incorporated
- 23 Jul 20206 years trading
- Registered office
- 4TH Floor, Suite 1, Office 5 Congress House, 14 Lyon Road, Harrow, Middlesex, HA1 2EN
- Nature of business
- Site preparation; Electrical installation
Startline Services Ltd is a 6-year-old private limited company registered in Harrow, company number 12762897, one of 9 groundworks and demolition companies in Harrow. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 down £412 (-6.8%) on the year before, to -£6,433.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£6,433 | £567 | £7,000 | 1 | |
| 31 Mar 2024 | -£6,021 | £11K | £11K | £17K | 1 |
| 31 Mar 2023 | -£8,461 | £22K | £30K | £39K | 1 |
| 31 Mar 2022 | -£4,824 | £16K | £43K | £49K | 1 |
| 31 Mar 2021 | £100 | £100 |
Where Startline Services Ltd is registered
The registered office is in Harrow (HA1), in the Harrow local authority area, London. Show HA1 2EN on a map.
Other trade companies in HA1
- Cabos Electrical LimitedElectricians
- Mia Maria Services LtdCleaning companies
- Ac Operations LtdScaffolders
- Verde Masters LtdLandscapers and gardeners
- Omega Works Group LtdLandscapers and gardeners
- Call 'Em LimitedPlumbers and heating engineers
- Swan Roofing Services LimitedRoofers
- DRV Property Solutions LtdPainters and decorators
What happens if Startline Services 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 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
- 12762897
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 July 2020 (6 years ago)
- Registered office
- 4TH Floor, Suite 1, Office 5 Congress House, 14 Lyon Road, Harrow, Middlesex, HA1 2EN
- Nature of business
- Site preparation (SIC 43120)
Electrical installation (SIC 43210) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 22 July 2026
Filing notes for groundworks and demolition companies
Groundworks and demolition companies tend to own heavy plant, so capital allowances and hire purchase liabilities show up in both the accounts and the CT600.
Similar companies in Harrow
Other active groundworks and demolition companies registered in Harrow.
- Bga-Weld Pipe Systems Limited2022
- C.I.Dura Construction Ltd2018
- CJM Operations Ltd2025
- Clonmel Building Contractors Limited1997
- David Brierley Limited2019
- Glencor Limited1998
- Grand Contractor Group Ltd2025
- MJ & CJ Ltd2020
All groundworks and demolition companies in Harrow · All trades in Harrow · Groundworks and demolition across the UK
Frequently asked questions
When are Startline Services Ltd's accounts due?
Startline Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Startline Services Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Startline Services Ltd still trading?
Startline Services 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 Startline Services Ltd do?
Startline Services Ltd is registered under Site preparation (SIC 43120); Electrical installation (SIC 43210).
How old is Startline Services Ltd?
Startline Services Ltd was incorporated on 23 July 2020, 6 years ago.
What is the penalty if Startline Services 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 Startline Services 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.