- Companies
- Cleaning companies
- London
- Crystal Castle Ltd
Crystal Castle Ltd
- Company number
- 17061966
- Incorporated
- 2 Mar 2026
- Registered office
- 486 Harrow RD, Harrow Road, London, W9 3QA
- Nature of business
- General cleaning of buildings
Crystal Castle Ltd is a newly incorporated private limited company registered in London, company number 17061966, one of 5,627 cleaning companies in London. Its next accounts are due at Companies House on 2 December 2027, and its first CT600 is due at HMRC on 1 March 2028.
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 Crystal Castle Ltd is registered
The registered office is in London (W9), in the Westminster local authority area, London. Show W9 3QA on a map.
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What happens if Crystal Castle 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 2 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 3 Dec 2027 to 2 Jan 2028 | £150 |
| 1 to 3 months late | 3 Jan 2028 to 2 Mar 2028 | £375 |
| 3 to 6 months late | 3 Mar 2028 to 2 Jun 2028 | £750 |
| More than 6 months late | From 3 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 17061966
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 March 2026
- Registered office
- 486 Harrow RD, Harrow Road, London, W9 3QA
- Nature of business
- General cleaning of buildings (SIC 81210)
- Year end
- 31 March (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 London
Other active cleaning companies registered in London.
- Crystal Clean Homes Ltd2023
- Crystal Clean IT Limited2025
- Crystal Clean Maintenance Ltd2017
- Crystal Clean Office and Commercial Cleaning Ltd2025
- Crystal Cleaning RM Limited2025
- Crystal Clear Clean Limited2019
- Crystal Clear Cleaners Cleaning Service Ltd2025
- Crystal Clear Solutions Limited2026
All cleaning companies in London · All trades in London · Cleaning companies across the UK
Frequently asked questions
When are Crystal Castle Ltd's accounts due?
Crystal Castle Ltd's next accounts are due at Companies House by 2 December 2027 (in 415 days), covering the period to 31 March 2027.
When is Crystal Castle 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 1 March 2027, due by 1 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Crystal Castle Ltd still trading?
Crystal Castle 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 Crystal Castle Ltd do?
Crystal Castle Ltd is registered under General cleaning of buildings (SIC 81210).
How old is Crystal Castle Ltd?
Crystal Castle Ltd was incorporated on 2 March 2026, less than a year ago.
What is the penalty if Crystal Castle 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 Crystal Castle 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.