- Companies
- Finishing trades
- G W McDuff Building Contractors Limited
G W McDuff Building Contractors Limited
- Company number
- 08580500
- Incorporated
- 21 Jun 201313 years trading
- Registered office
- C/O Gryson House, The Grove, Pontllanfraith, NP12 2EQ
- Nature of business
- Other building completion and finishing
G W McDuff Building Contractors Limited is a 13-year-old private limited company registered in Pontllanfraith, company number 08580500, one of the UK's building finishing companies. 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 down £10K (-31.8%) on the year before, to -£42K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £272K against £147K owed within a year: 1.8 times cover.
- 7 employees on average, up from 4 the year before.
- 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 |
|---|---|---|---|---|---|
| 31 Aug 2025 | -£42K | £847 | £272K | £147K | 7 |
| 31 Aug 2024 | -£32K | £4,603 | £274K | £141K | 4 |
| 31 Aug 2023 | -£24K | £581 | £263K | £149K | 5 |
| 31 Aug 2022 | -£11K | £2,361 | £158K | £115K | 5 |
| 31 Aug 2021 | -£11K | £2,941 | £98K | £125K | 7 |
| 31 Aug 2020 | -£11K | £2,644 | £14K | £45K | 5 |
| 31 Aug 2019 | £2,464 | £5,728 | £6,928 | £25K | |
| 31 Aug 2018 | £8,070 | £72K | £90K | ||
| 31 Aug 2017 | -£530 | £58K | £89K | ||
| 30 Jun 2016 | £100 | £100 |
Where G W McDuff Building Contractors Limited is registered
The registered office is in Pontllanfraith (NP12), in the Caerphilly local authority area, Wales. Show NP12 2EQ on a map.
Other trade companies in NP12
- Hohm Property Group LtdProperty developers
- R&C Mechanics LimitedMechanics and garages
- M & R Property Solutions (SW) LimitedFinishing trades
- JLH Scaffolding LtdScaffolders
- SM Contracting SW LtdBuilders
- Top Notch Carpentry Services LimitedInstallers
- Cardiff Bathrooms LtdFinishing trades
- CB Brickwork & Building LtdSpecialist contractors
What happens if G W McDuff Building Contractors 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 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
- 08580500
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 June 2013 (13 years ago)
- Registered office
- C/O Gryson House, The Grove, Pontllanfraith, NP12 2EQ
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 30 July 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies
Other active building finishing companies.
Frequently asked questions
When are G W McDuff Building Contractors Limited's accounts due?
G W McDuff Building Contractors Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is G W McDuff Building Contractors Limited'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 G W McDuff Building Contractors Limited still trading?
G W McDuff Building Contractors 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 G W McDuff Building Contractors Limited do?
G W McDuff Building Contractors Limited is registered under Other building completion and finishing (SIC 43390).
How old is G W McDuff Building Contractors Limited?
G W McDuff Building Contractors Limited was incorporated on 21 June 2013, 13 years ago.
What is the penalty if G W McDuff Building Contractors 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 G W McDuff Building Contractors 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.