- Companies
- Civil engineering
- Bury
- Sonix Construction Limited
Sonix Construction Limited
- Company number
- 06090365
- Incorporated
- 8 Feb 200719 years trading
- Registered office
- Tower House, 269 Walmersley Road, Bury, Lancashire, BL9 6NX
- Nature of business
- Construction of other civil engineering projects n.e.c.
Sonix Construction Limited is a 19-year-old private limited company registered in Bury, company number 06090365, one of 40 civil engineering contractors in Bury. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 28 February 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 £426K (+188.6%) on the year before, to £651K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £1.1M against £472K owed within a year: 2.2 times cover.
- 7 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £651K | £753K | £1.1M | £472K | 7 |
| 29 Feb 2024 | £226K | £429K | £622K | £391K | 7 |
| 28 Feb 2023 | £55K | £20K | £273K | £207K | 8 |
| 28 Feb 2022 | £15K | £79K | £270K | £239K | 6 |
| 28 Feb 2021 | £176 | £32K | £161K | £133K | 5 |
| 29 Feb 2020 | £15K | £43K | £192K | £179K | 5 |
| 28 Feb 2019 | £30K | £36K | £149K | £122K | 4 |
| 28 Feb 2018 | £27K | £112K | £218K | £196K | 4 |
| 28 Feb 2017 | £29K | £11K | £185K | £166K | 5 |
| 29 Feb 2016 | £42K | £38K | £182K | £151K |
Where Sonix Construction Limited is registered
The registered office is in Bury (BL9), in the Bury local authority area, North West. Show BL9 6NX on a map.
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What happens if Sonix Construction Limited 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
- 06090365
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 February 2007 (19 years ago)
- Registered office
- Tower House, 269 Walmersley Road, Bury, Lancashire, BL9 6NX
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 8 February 2026
- Charges (mortgages)
- 0 outstanding of 1 registered
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 in Bury
Other active civil engineering contractors registered in Bury.
- Speakmans Construction Limited2002
- Terrabuild Ltd2019
- Ucl Comms Ltd2023
- Ukgwr NW Limited2026
- Vida Construction Ltd2020
- Angle Plant Hire Ltd.1997
- Beehive Contractors Ltd2018
- Beehive Utilities Limited2021
All civil engineering contractors in Bury · All trades in Bury · Civil engineering across the UK
Frequently asked questions
When are Sonix Construction Limited's accounts due?
Sonix Construction Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Sonix Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 28 February 2026, due by 28 February 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 Sonix Construction Limited still trading?
Sonix Construction Limited 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 Sonix Construction Limited do?
Sonix Construction Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Sonix Construction Limited?
Sonix Construction Limited was incorporated on 8 February 2007, 19 years ago.
What is the penalty if Sonix Construction Limited 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 Sonix Construction Limited 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.