- Companies
- Cleaning companies
- Salisbury
- Cleantech Support Services Limited
Cleantech Support Services Limited
- Company number
- 16783492
- Incorporated
- 14 Oct 2025
- Registered office
- Windover House, ST. Ann Street, Salisbury, SP1 2DR
- Nature of business
- Specialised cleaning services
Cleantech Support Services Limited is a newly incorporated private limited company registered in Salisbury, company number 16783492, one of 50 cleaning companies in Salisbury. Its next accounts are due at Companies House on 14 July 2027, and its first CT600 is due at HMRC on 13 October 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 Cleantech Support Services Limited is registered
The registered office is in Salisbury (SP1), in the Wiltshire local authority area, South West. Show SP1 2DR on a map.
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- Riverside House (Developments) LimitedProperty developers
- Alf Construction (Southern) LtdBuilders
Shared registered office
51 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 Cleantech Support Services 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 14 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Jul 2027 to 14 Aug 2027 | £150 |
| 1 to 3 months late | 15 Aug 2027 to 14 Oct 2027 | £375 |
| 3 to 6 months late | 15 Oct 2027 to 14 Jan 2028 | £750 |
| More than 6 months late | From 15 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16783492
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 October 2025
- Registered office
- Windover House, ST. Ann Street, Salisbury, SP1 2DR
- Nature of business
- Specialised cleaning services (SIC 81222)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Salisbury
Other active cleaning companies registered in Salisbury.
- Dohatech Healthservice Limited2014
- Ecleen Ltd2016
- Flawless Spaces South West Limited2021
- Glow Choice Services Ltd2023
- Gmugg Ltd2026
- Goldust Cleaning (Salisbury) Ltd2021
- Goswell Car Wash Limited2026
- Graham Whitlock Window Cleaning Limited2013
All cleaning companies in Salisbury · All trades in Salisbury · Cleaning companies across the UK
Frequently asked questions
When are Cleantech Support Services Limited's accounts due?
Cleantech Support Services Limited's next accounts are due at Companies House by 14 July 2027 (in 275 days), covering the period to 31 October 2026.
When is Cleantech Support Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 13 October 2026, due by 13 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Cleantech Support Services Limited still trading?
Cleantech Support Services 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 Cleantech Support Services Limited do?
Cleantech Support Services Limited is registered under Specialised cleaning services (SIC 81222).
How old is Cleantech Support Services Limited?
Cleantech Support Services Limited was incorporated on 14 October 2025, less than a year ago.
What is the penalty if Cleantech Support Services 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 Cleantech Support Services 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.