- Companies
- Cleaning companies
- Newbury
- Diamond Spark Ltd
Diamond Spark Ltd
- Company number
- 16330290
- Incorporated
- 20 Mar 20251 year trading
- Registered office
- Imo Car Wash Newbury, Pinchington Lane, Newbury, RG14 7HB
- Nature of business
- Other cleaning services
Diamond Spark Ltd is a 1-year-old private limited company registered in Newbury, company number 16330290, one of 26 cleaning companies in Newbury. Its next accounts are due at Companies House on 20 December 2026, and its first CT600 is due at HMRC on 19 March 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 Diamond Spark Ltd is registered
The registered office is in Newbury (RG14), in the West Berkshire local authority area, South East. Show RG14 7HB on a map.
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- Dorneywood Consulting LimitedProperty developers
- Fortis One LimitedProperty developers
- Startech Auto Care LtdMechanics and garages
- Atl Premium Cleaning & Painting Services LtdPainters and decorators
What happens if Diamond Spark 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 20 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Dec 2026 to 20 Jan 2027 | £150 |
| 1 to 3 months late | 21 Jan 2027 to 20 Mar 2027 | £375 |
| 3 to 6 months late | 21 Mar 2027 to 20 Jun 2027 | £750 |
| More than 6 months late | From 21 Jun 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
- 16330290
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 March 2025 (1 year ago)
- Registered office
- Imo Car Wash Newbury, Pinchington Lane, Newbury, RG14 7HB
- Nature of business
- Other cleaning services (SIC 81299)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 19 March 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 Newbury
Other active cleaning companies registered in Newbury.
- Gipto Limited2025
- Imperial Contract Cleaning Limited2012
- K7 Detailing Ltd2026
- London Contract Services Limited1997
- Magic Maids Cleaning Ltd2023
- Monks Lane Valet Centre Ltd2025
- Progress Contract Services Limited2023
- Pulleyn Cleaning Services Ltd2002
All cleaning companies in Newbury · All trades in Newbury · Cleaning companies across the UK
Frequently asked questions
When are Diamond Spark Ltd's accounts due?
Diamond Spark Ltd's next accounts are due at Companies House by 20 December 2026 (in 68 days), covering the period to 31 March 2026.
When is Diamond Spark 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 19 March 2026, due by 19 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamond Spark Ltd still trading?
Diamond Spark 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 Diamond Spark Ltd do?
Diamond Spark Ltd is registered under Other cleaning services (SIC 81299).
How old is Diamond Spark Ltd?
Diamond Spark Ltd was incorporated on 20 March 2025, 1 year ago.
What is the penalty if Diamond Spark 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 Diamond Spark 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.