Company profile · Builders
Byron Construction Ltd
Byron Construction Ltd is a 4-year-old private limited company registered in Treorchy, company number 14190777, one of 7 building contractors in Treorchy. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 30 June 2026, as filed at Companies House.
Byron Construction Ltd over the years
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 £45K (-28.5%) on the year before, to £114K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £111K against £10K owed within a year: more than 10 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 4 years, 2023 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2026 | £114K | £111K | £10K | 3 | |
| 30 Jun 2025 | £159K | £222K | £103K | 3 | |
| 30 Jun 2024 | £45K | £62K | £25K | 3 | |
| 30 Jun 2023 | £23K | £41K | £24K | 3 |
Where Byron Construction Ltd is registered
The registered office is in Treorchy (CF42), in the Rhondda Cynon Taf local authority area, Wales. Show CF42 5RA on a map.
Other trade companies in CF42
- Eagle.Pro.Roofing.UK. LtdRoofers
- Valley Flooring LtdFloor and wall tilers
- LL Property Partners LtdProperty developers
- A1 Lifting Operations LimitedCivil engineering
- Lewys Electrical LtdElectricians
- Pro-Renovate LtdProperty developers
- A & K Plastering and Rendering LtdBuilders
- Treorchy Hand Carwash 1 LtdCleaning companies
What happens if Byron Construction 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 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 14190777
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 June 2022 (4 years ago)
- Registered office
- 2 Crichton Street, Treherbert, Treorchy, CF42 5RA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 22 June 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 Treorchy
Other active building contractors registered in Treorchy.
- Im Construction (Rhondda) Ltd2019
- Iris Property Developments Ltd2023
- Lee Hallam & Sons Ltd2021
- Pirus Electrical Ltd2016
- Sam Drylining Limited2007
- A & K Plastering and Rendering Ltd2026
All building contractors in Treorchy · All trades in Treorchy · Builders across the UK
Frequently asked questions
When are Byron Construction Ltd's accounts due?
Byron Construction Ltd's next accounts are due at Companies House by 31 March 2028 (in 536 days), covering the period to 30 June 2027.
When is Byron Construction Ltd's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is Byron Construction Ltd still trading?
Byron Construction 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 Byron Construction Ltd do?
Byron Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Byron Construction Ltd?
Byron Construction Ltd was incorporated on 23 June 2022, 4 years ago.
What is the penalty if Byron Construction 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 Byron Construction 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.