- Companies
- Property developers
- London
- Gillian Williams Developments Limited
Gillian Williams Developments Limited
- Company number
- 03385550
- Incorporated
- 12 Jun 199729 years trading
- Registered office
- 80 Strand, London, WC2R 0DT
- Nature of business
- Development of building projects
Gillian Williams Developments Limited is a 29-year-old private limited company registered in London, company number 03385550, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Gillian Williams Developments Limited is registered
The registered office is in London (WC2R), in the Westminster local authority area, London. Show WC2R 0DT on a map.
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Shared registered office
448 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Gillian Williams Developments 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 03385550
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 June 1997 (29 years ago)
- Registered office
- 80 Strand, London, WC2R 0DT
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 12 June 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- Gilligan Property Developments Ltd2026
- Gillmic Ltd2024
- Gimenez Roofing & Construction Ltd2008
- Gingertree Property Ltd2025
- Ginjo Construction Limited2021
- Gio Group Holdings Ltd2025
- Giuseppe Marketing Ltd2021
- Giza Structural Consultants Ltd2026
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Gillian Williams Developments Limited's accounts due?
Gillian Williams Developments Limited's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Gillian Williams Developments Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Gillian Williams Developments Limited still trading?
Gillian Williams Developments 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 Gillian Williams Developments Limited do?
Gillian Williams Developments Limited is registered under Development of building projects (SIC 41100).
How old is Gillian Williams Developments Limited?
Gillian Williams Developments Limited was incorporated on 12 June 1997, 29 years ago.
What is the penalty if Gillian Williams Developments 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 Gillian Williams Developments 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.