- Companies
- Installers
- Horley
- William Thomson Design Ltd
William Thomson Design Ltd
- Company number
- 16314150
- Incorporated
- 13 Mar 20251 year trading
- Registered office
- Dalarna Broadbridge Lane, Smallfield, Horley, RH6 9RF
- Nature of business
- Other construction installation; Joinery installation; Other building completion and finishing; Other specialised construction activities n.e.c.
William Thomson Design Ltd is a 1-year-old private limited company registered in Horley, company number 16314150, one of 11 installation companies (insulation, lifts, shutters and similar) in Horley. Its next accounts are due at Companies House on 13 December 2026, and its first CT600 is due at HMRC on 12 March 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where William Thomson Design Ltd is registered
The registered office is in Horley (RH6), in the Tandridge local authority area, South East. Show RH6 9RF on a map.
Other trade companies in RH6
- Cuff Grounds Maintenance LtdLandscapers and gardeners
- Cool Response LimitedPlumbers and heating engineers
- American Autoparts LimitedMotor traders
- Touchwood Concepts & Designs LtdBuilders
- Red Apple Cars LimitedMotor traders
- Kinsted LtdProperty developers
- S.P Plumbing London LtdPlumbers and heating engineers
- Micahali Maintenence LtdSpecialist contractors
What happens if William Thomson Design 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 13 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Dec 2026 to 13 Jan 2027 | £150 |
| 1 to 3 months late | 14 Jan 2027 to 13 Mar 2027 | £375 |
| 3 to 6 months late | 14 Mar 2027 to 13 Jun 2027 | £750 |
| More than 6 months late | From 14 Jun 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
- 16314150
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 March 2025 (1 year ago)
- Registered office
- Dalarna Broadbridge Lane, Smallfield, Horley, RH6 9RF
- Nature of business
- Other construction installation (SIC 43290)
Joinery installation (SIC 43320)
Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 12 March 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Horley
Other active installation companies (insulation, lifts, shutters and similar) registered in Horley.
- Wishfulpainting Ltd2020
- Andrew Peters Holdings Limited2026
- Barker and Clarke Carpentry and Joinery Ltd2026
- Blue2Blue Ltd2006
- Build Time Limited2013
- Diamond Loft Spaces Ltd2018
- Glass Worx Installations Ltd2019
- Marley Groundwork’S Ltd2021
All installation companies (insulation, lifts, shutters and similar) in Horley · All trades in Horley · Installers across the UK
Frequently asked questions
When are William Thomson Design Ltd's accounts due?
William Thomson Design Ltd's next accounts are due at Companies House by 13 December 2026 (in 61 days), covering the period to 31 March 2026.
When is William Thomson Design Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 12 March 2026, due by 12 March 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 William Thomson Design Ltd still trading?
William Thomson Design 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 William Thomson Design Ltd do?
William Thomson Design Ltd is registered under Other construction installation (SIC 43290); Joinery installation (SIC 43320); Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999).
How old is William Thomson Design Ltd?
William Thomson Design Ltd was incorporated on 13 March 2025, 1 year ago.
What is the penalty if William Thomson Design 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 William Thomson Design 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.