- Companies
- Civil engineering
- Tadworth
- Sustainable Consulting Ltd
Sustainable Consulting Ltd
- Company number
- 13984855
- Incorporated
- 17 Mar 20224 years trading
- Registered office
- 17 Harpurs, Tadworth, KT20 5UD
- Nature of business
- Construction of water projects; Service activities incidental to water transportation; Engineering related scientific and technical consulting activities; Environmental consulting activities
Sustainable Consulting Ltd is a 4-year-old private limited company registered in Tadworth, company number 13984855, one of 5 civil engineering contractors in Tadworth. 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 £10K (+45.1%) on the year before, to £33K.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £33K | £33K | £0 | 0 | |
| 31 Mar 2024 | £23K | £23K | £0 | 0 | |
| 31 Mar 2023 | £6,744 | £6,744 | £0 | 1 |
Where Sustainable Consulting Ltd is registered
The registered office is in Tadworth (KT20), in the Reigate and Banstead local authority area, South East. Show KT20 5UD on a map.
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What happens if Sustainable Consulting 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 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
- 13984855
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 March 2022 (4 years ago)
- Registered office
- 17 Harpurs, Tadworth, KT20 5UD
- Nature of business
- Construction of water projects (SIC 42910)
Service activities incidental to water transportation (SIC 52220)
Engineering related scientific and technical consulting activities (SIC 71122)
Environmental consulting activities (SIC 74901) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 5 February 2026
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 in Tadworth
Other active civil engineering contractors registered in Tadworth.
All civil engineering contractors in Tadworth · All trades in Tadworth · Civil engineering across the UK
Frequently asked questions
When are Sustainable Consulting Ltd's accounts due?
Sustainable Consulting Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Sustainable Consulting Ltd'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 Sustainable Consulting Ltd still trading?
Sustainable Consulting 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 Sustainable Consulting Ltd do?
Sustainable Consulting Ltd is registered under Construction of water projects (SIC 42910); Service activities incidental to water transportation (SIC 52220); Engineering related scientific and technical consulting activities (SIC 71122); Environmental consulting activities (SIC 74901).
How old is Sustainable Consulting Ltd?
Sustainable Consulting Ltd was incorporated on 17 March 2022, 4 years ago.
What is the penalty if Sustainable Consulting 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 Sustainable Consulting 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.