- Companies
- Civil engineering
- G.T. Williams Limited
G.T. Williams Limited
- Company number
- 06036769
- Incorporated
- 22 Dec 200619 years trading
- Registered office
- C/O Gwyn Thomas & Co, 1 Thomas Buildings, New Street Pwllheli, Gwynedd, LL53 5HH
- Nature of business
- Construction of water projects; Construction of other civil engineering projects n.e.c.
G.T. Williams Limited is a 19-year-old private limited company registered in New Street Pwllheli, company number 06036769, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £65K (+6.3%) on the year before, to £1.1M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £1.2M against £648K owed within a year: 1.9 times cover.
- 40 employees on average, up from 35 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 Mar 2025 | £1.1M | £244K | £1.2M | £648K | 40 |
| 31 Mar 2024 | £1M | £332K | £1.1M | £503K | 35 |
| 31 Mar 2023 | £804K | £197K | £1.2M | £549K | 35 |
| 31 Mar 2022 | £552K | £105 | £1.1M | £615K | 39 |
| 31 Mar 2021 | £660K | £147K | £1M | £386K | 28 |
| 31 Mar 2020 | £787K | £14K | £1.1M | £267K | 14 |
| 31 Mar 2019 | £661K | £33K | £1.2M | £325K | 22 |
| 31 Mar 2018 | £572K | £23K | £659K | £203K | 17 |
| 31 Mar 2017 | £571K | £43K | £534K | £96K | 19 |
| 31 Mar 2016 | £643K | £188K | £606K | £120K |
Who runs and owns G.T. Williams Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| A*** W*** | Director | Dec 2006 |
| H*** W*** | Director | Apr 2024 |
| A*** W*** | Secretary | Dec 2006 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| E*** W*** | Director | Dec 2006 | Nov 2025 |
| G*** W*** | Director | Dec 2006 | Nov 2025 |
| G*** W*** | Director | Dec 2006 | Sep 2016 |
Person with significant control
Charges (secured borrowing)
4 of 6 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Ifw-Debt Lp Acting By Fwc Ifw Debt Gp Limited Acting By Fw Capital Limited | Outstanding | Feb 2026 |
| Ifw-Debt Lp (Acting By Its General Partner) Fwc Ifw Debt Gp Limited Acting By Fw Capital Limited | Outstanding | Feb 2026 |
| Dbw Investments (10) Limited | Outstanding | May 2020 |
| HSBC Bank PLC | Outstanding | Feb 2007 |
| Dbw Investments (11) Limited | Satisfied Nov 2020 | Nov 2018 |
| Dbw Investments (11) Limited | Satisfied Aug 2020 | Nov 2018 |
Where G.T. Williams Limited is registered
The registered office is in New Street Pwllheli (LL53), in the Gwynedd local authority area, Wales. Show LL53 5HH on a map.
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- Cadelio CyfSpecialist contractors
- Halpine Construction LimitedJoiners and carpenters
- Feucht Engineering LtdMachinery repair and installation
- Stuart Livingstone LtdPlumbers and heating engineers
- Teiars Hughes Tyres LtdMechanics and garages
- Saevar Solutions LtdCleaning companies
- Dragon Detailing & Body Repairs LtdMotor traders
Also registered at this address
1 other company uses the same registered office as G.T. Williams Limited.
- Nefyn Coaches LimitedMachinery repair and installation
What happens if G.T. Williams 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
- 06036769
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 December 2006 (19 years ago)
- Registered office
- C/O Gwyn Thomas & Co, 1 Thomas Buildings, New Street Pwllheli, Gwynedd, LL53 5HH
- Nature of business
- Construction of water projects (SIC 42910)
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
- 31 March 2025
- Last confirmation statement
- 9 November 2025
- Charges (mortgages)
- 4 outstanding of 6 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
Other active civil engineering contractors.
Frequently asked questions
When are G.T. Williams Limited's accounts due?
G.T. Williams Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is G.T. Williams Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is G.T. Williams Limited still trading?
G.T. Williams 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.T. Williams Limited do?
G.T. Williams Limited is registered under Construction of water projects (SIC 42910); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is G.T. Williams Limited?
G.T. Williams Limited was incorporated on 22 December 2006, 19 years ago.
Who runs G.T. Williams Limited?
G.T. Williams Limited has 2 active directors, the longest-serving appointed in Dec 2006. Their names and service addresses are on the Companies House register.
Who owns G.T. Williams Limited?
One person or company has significant control of G.T. Williams Limited: G T Williams Holdings Ltd (owns 75% or more of the shares).
What is the penalty if G.T. Williams 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.T. Williams 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.