- Companies
- Civil engineering
- Conway & Sons Ltd
Conway & Sons Ltd
- Company number
- SC884613
- Incorporated
- 31 Mar 2026
- Registered office
- 1103 Argyle Street, Studio 17 Unit 2, the Hidden Lane, Finnieston, G3 8ND
- Nature of business
- Construction of roads and motorways
Conway & Sons Ltd is a newly incorporated private limited company registered in the Hidden Lane, company number SC884613, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 December 2027, and its first CT600 is due at HMRC on 30 March 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.
Is this your company?
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Where Conway & Sons Ltd is registered
The registered office is in the Hidden Lane (G3), in the Glasgow City local authority area, Scotland. Show G3 8ND on a map.
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Also registered at this address
3 other companies use the same registered office as Conway & Sons Ltd.
- Amok Contractors LtdSpecialist contractors
- Knockalla Civils LtdCivil engineering
- WLG Contracts LimitedSpecialist contractors
What happens if Conway & Sons 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
- SC884613
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 March 2026
- Registered office
- 1103 Argyle Street, Studio 17 Unit 2, the Hidden Lane, Finnieston, G3 8ND
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies
Other active civil engineering contractors.
Frequently asked questions
When are Conway & Sons Ltd's accounts due?
Conway & Sons Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Conway & Sons 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 30 March 2027, due by 30 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Conway & Sons Ltd still trading?
Conway & Sons 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 Conway & Sons Ltd do?
Conway & Sons Ltd is registered under Construction of roads and motorways (SIC 42110).
How old is Conway & Sons Ltd?
Conway & Sons Ltd was incorporated on 31 March 2026, less than a year ago.
What is the penalty if Conway & Sons 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 Conway & Sons 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.