- Companies
- Specialist contractors
- Dartford
- Sonstone UK Ltd.
Sonstone UK Ltd.
- Company number
- 07015446
- Incorporated
- 10 Sep 200917 years trading
- Registered office
- Top Floor, West Hill House, Dartford, Kent, DA1 2EU
- Nature of business
- Other specialised construction activities n.e.c.
Sonstone UK Ltd. is a 17-year-old private limited company registered in Dartford, company number 07015446, one of 151 specialist construction companies in Dartford. 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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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 £14K (+37.3%) on the year before, to £52K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £109K against £58K owed within a year: 1.9 times cover.
- 2 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £52K | £37K | £109K | £58K | 2 |
| 30 Sep 2024 | £38K | £40K | £119K | £92K | 2 |
| 30 Sep 2023 | £3,026 | £24K | £66K | £71K | 2 |
| 30 Sep 2022 | £26K | £17 | £61K | £39K | 2 |
| 30 Sep 2021 | £45K | £1,838 | £59K | £21K | 3 |
| 30 Sep 2020 | £74K | £17 | £129K | £64K | 2 |
| 30 Sep 2019 | £53K | £13K | £90K | £50K | 3 |
| 30 Sep 2018 | £119K | £84K | £157K | £53K | 3 |
| 30 Sep 2017 | £69K | £12K | £101K | £44K | 4 |
| 30 Sep 2016 | £74K | £19K | £108K | £39K |
Who runs and owns Sonstone UK Ltd.
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| S*** B*** | Director | Sep 2009 |
| C*** J*** | Director | Sep 2009 |
| L*** J*** | Secretary | Sep 2009 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| D*** J*** | Director | Sep 2009 | Aug 2017 |
People with significant control (2)
Where Sonstone UK Ltd. is registered
The registered office is in Dartford (DA1), in the Dartford local authority area, South East. Show DA1 2EU on a map.
Other trade companies in DA1
- Unit 6 Bespoke LtdSpecialist contractors
- Smartlifting LtdBuilders
- Degrees Bespoke Finishes LtdPlasterers
- A & A Electrical and Refrigeration LtdBuilders
- Elm Servicing LtdMachinery repair and installation
- WND Refrigeration LimitedPlumbers and heating engineers
- Moore Flooring and Sons LtdFloor and wall tilers
- Kinergy Systems LtdElectricians
Shared registered office
34 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 Sonstone UK 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 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
- 07015446
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 September 2009 (17 years ago)
- Registered office
- Top Floor, West Hill House, Dartford, Kent, DA1 2EU
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 11 September 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Dartford
Other active specialist construction companies registered in Dartford.
- Southern Damp Proofing Specialists Limited2026
- Sparklight Support Services Ltd2025
- Splendourz B&L Limited2013
- Stankudu Limited2015
- Stela Support Services Ltd2013
- Structiv Group Ltd2025
- Sure Build Contractors Ltd2025
- T F Fabrication & Welding Limited2005
All specialist construction companies in Dartford · All trades in Dartford · Specialist contractors across the UK
Frequently asked questions
When are Sonstone UK Ltd.'s accounts due?
Sonstone UK Ltd.'s next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Sonstone UK Ltd.'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 Sonstone UK Ltd. still trading?
Sonstone UK 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 Sonstone UK Ltd. do?
Sonstone UK Ltd. is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sonstone UK Ltd.?
Sonstone UK Ltd. was incorporated on 10 September 2009, 17 years ago.
Who runs Sonstone UK Ltd.?
Sonstone UK Ltd. has 2 active directors, the longest-serving appointed in Sep 2009. Their names and service addresses are on the Companies House register.
Who owns Sonstone UK Ltd.?
2 people or companies have significant control of Sonstone UK Ltd.: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Sonstone UK 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 Sonstone UK 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.