- Companies
- Cleaning companies
- Sittingbourne
- SDK Maintenance Services Limited
SDK Maintenance Services Limited
- Company number
- 16554519
- Incorporated
- 1 Jul 20251 year trading
- Registered office
- Hye Stepps Highsted Valley, Rodmersham, Sittingbourne, ME9 0AB
- Nature of business
- General cleaning of buildings; Window cleaning services
SDK Maintenance Services Limited is a 1-year-old private limited company registered in Sittingbourne, company number 16554519, one of 38 cleaning companies in Sittingbourne. Its next accounts are due at Companies House on 1 April 2027, and its first CT600 is due at HMRC on 30 June 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 SDK Maintenance Services Limited is registered
The registered office is in Sittingbourne (ME9), in the Swale local authority area, South East. Show ME9 0AB on a map.
Other trade companies in ME9
- Artygroup LtdPlumbers and heating engineers
- Lhgardenservices LtdLandscapers and gardeners
- The Drainist LtdCivil engineering
- Fieldstone Roofing LtdRoofers
- Mannouch&Son LtdBuilders
- Civil Install LtdCivil engineering
- All Around Scaffolding LimitedScaffolders
- Eastwood Access LtdScaffolders
Also registered at this address
2 other companies use the same registered office as SDK Maintenance Services Limited.
What happens if SDK Maintenance 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 1 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Apr 2027 to 1 May 2027 | £150 |
| 1 to 3 months late | 2 May 2027 to 1 Jul 2027 | £375 |
| 3 to 6 months late | 2 Jul 2027 to 1 Oct 2027 | £750 |
| More than 6 months late | From 2 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16554519
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 July 2025 (1 year ago)
- Registered office
- Hye Stepps Highsted Valley, Rodmersham, Sittingbourne, ME9 0AB
- Nature of business
- General cleaning of buildings (SIC 81210)
Window cleaning services (SIC 81221) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 30 June 2026
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 Sittingbourne
Other active cleaning companies registered in Sittingbourne.
- Solaris Exterior Cleaning Limited2021
- Tada Cleans Limited2026
- Venpro Cleaning Ltd2025
- 21 Consultancy Ltd2022
- 6 Stars Cleaning Limited2017
- Alpha Cleaning & Support Services Ltd2021
- B & B Cleaning & Maintenance Kent Ltd2010
- Bapchild Hand Car Wash Ltd2018
All cleaning companies in Sittingbourne · All trades in Sittingbourne · Cleaning companies across the UK
Frequently asked questions
When are SDK Maintenance Services Limited's accounts due?
SDK Maintenance Services Limited's next accounts are due at Companies House by 1 April 2027 (in 171 days), covering the period to 31 July 2026.
When is SDK Maintenance 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 30 June 2026, due by 30 June 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SDK Maintenance Services Limited still trading?
SDK Maintenance 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 SDK Maintenance Services Limited do?
SDK Maintenance Services Limited is registered under General cleaning of buildings (SIC 81210); Window cleaning services (SIC 81221).
How old is SDK Maintenance Services Limited?
SDK Maintenance Services Limited was incorporated on 1 July 2025, 1 year ago.
What is the penalty if SDK Maintenance 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 SDK Maintenance 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.