- Companies
- Builders
- Londonderry
- Top-Line Contracts Ltd
Top-Line Contracts Ltd
- Company number
- NI681251
- Incorporated
- 3 Aug 20215 years trading
- Registered office
- 10 Magheraboy Terrace, Dungiven, Londonderry, BT47 4RU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Top-Line Contracts Ltd is a 5-year-old private limited company registered in Londonderry, company number NI681251, one of 95 building contractors in Londonderry. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 up £13K (+19%) on the year before, to £84K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £108K against £33K owed within a year: 3.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £84K | £45K | £108K | £33K | 0 |
| 31 Aug 2024 | £70K | £47K | £97K | £33K | 1 |
| 31 Aug 2023 | £56K | £39K | £74K | £33K | 1 |
| 31 Aug 2022 | £21K | £15K | £35K | £14K | 2 |
Where Top-Line Contracts Ltd is registered
The registered office is in Londonderry (BT47), in the Causeway Coast and Glens local authority area, Northern Ireland. Show BT47 4RU on a map.
Other trade companies in BT47
- RNK Contracts LimitedGroundworks and demolition
- Den Electrical LtdElectricians
- BDK Consulting LimitedProperty developers
- Oakline Engineering LtdInstallers
- Killew Property Services LimitedFacilities management
- PH Autobody LimitedMechanics and garages
- C Doherty Autos LtdMechanics and garages
- CPMH LtdBuilders
What happens if Top-Line Contracts 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- NI681251
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 August 2021 (5 years ago)
- Registered office
- 10 Magheraboy Terrace, Dungiven, Londonderry, BT47 4RU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 22 July 2025
- Previous names
- Derway Contracts Pty Ltd (until 17 Feb 2022)
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 Londonderry
Other active building contractors registered in Londonderry.
- Total Site Worx Ltd2015
- Tuk Contracts Limited2020
- A A Miller & Son Ltd2005
- Ard Na Gal Limited2021
- Ardkill Timber Frames Ltd2014
- Ashmore Construction Services Limited2022
- B Doherty Construction Limited2021
- B MC G Construction Limited2021
All building contractors in Londonderry · All trades in Londonderry · Builders across the UK
Frequently asked questions
When are Top-Line Contracts Ltd's accounts due?
Top-Line Contracts Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Top-Line Contracts Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Top-Line Contracts Ltd still trading?
Top-Line Contracts 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 Top-Line Contracts Ltd do?
Top-Line Contracts Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Top-Line Contracts Ltd?
Top-Line Contracts Ltd was incorporated on 3 August 2021, 5 years ago.
What is the penalty if Top-Line Contracts 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 Top-Line Contracts 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.