- Companies
- Plumbers and heating engineers
- Hayes
- Black to White Systems Limited
Black to White Systems Limited
- Company number
- 09973576
- Incorporated
- 27 Jan 201610 years trading
- Registered office
- Unit 2 Warnford Industrial Estate, Clayton Road, Hayes, UB3 1BQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Black to White Systems Limited is a 10-year-old private limited company registered in Hayes, company number 09973576, one of 84 plumbing and heating companies in Hayes. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 down £262 (-1.3%) on the year before, to £21K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £55K against £39K owed within a year: 1.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £21K | £6,997 | £55K | £39K | 0 |
| 31 Jan 2024 | £21K | £5,663 | £54K | £39K | 0 |
| 31 Jan 2023 | £20K | £12K | £60K | £48K | 0 |
| 31 Jan 2022 | £1,386 | £17K | £30K | 0 | |
| 31 Jan 2021 | £2,465 | £23K | £36K | 2 | |
| 31 Jan 2020 | £5,958 | £55K | £70K | 4 | |
| 31 Jan 2019 | £6,275 | £32K | £31K | ||
| 31 Jan 2018 | £9,924 | £16K | £16K | £13K | |
| 31 Jan 2017 | £221 | £616 | £617 | £845 |
Who runs and owns Black to White Systems Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| B*** S*** | Director | Jan 2016 |
| B*** S*** | Secretary | Jan 2016 |
Person with significant control
Where Black to White Systems Limited is registered
The registered office is in Hayes (UB3), in the Hillingdon local authority area, London. Show UB3 1BQ on a map.
Other trade companies in UB3
- Rennove LimitedProperty developers
- KSJ Design & Build LtdBuilders
- KCRQ LimitedCleaning companies
- HKR Roofing LtdRoofers
- Syg Development Group LtdProperty developers
- Ironspan Industrial Services LtdMachinery repair and installation
- RK9 LimitedBuilders
- Elite Construction and Roofing LimitedBuilders
Also registered at this address
1 other company uses the same registered office as Black to White Systems Limited.
- Black to White Electrical Wholesalers LimitedMachinery repair and installation
What happens if Black to White Systems 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 09973576
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 January 2016 (10 years ago)
- Registered office
- Unit 2 Warnford Industrial Estate, Clayton Road, Hayes, UB3 1BQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 26 January 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Hayes
Other active plumbing and heating companies registered in Hayes.
- Blue Flame Solutions Ltd2025
- Blueshield Mep Limited2025
- BN Plumbing & Electric Ltd2026
- Bobb Heating & Plumbing Ltd2021
- Boxo Limited2026
- Bryan's Heating Services Ltd2019
- CC Heating & Ventilation Services Limited2025
- Chadha Contracting Services Ltd2022
All plumbing and heating companies in Hayes · All trades in Hayes · Plumbers and heating engineers across the UK
Frequently asked questions
When are Black to White Systems Limited's accounts due?
Black to White Systems Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Black to White Systems Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Black to White Systems Limited still trading?
Black to White Systems 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 Black to White Systems Limited do?
Black to White Systems Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Black to White Systems Limited?
Black to White Systems Limited was incorporated on 27 January 2016, 10 years ago.
Who runs Black to White Systems Limited?
Black to White Systems Limited has 1 active director, the longest-serving appointed in Jan 2016. Their names and service addresses are on the Companies House register.
Who owns Black to White Systems Limited?
One person or company has significant control of Black to White Systems Limited: an individual (owns 75% or more of the shares).
What is the penalty if Black to White Systems 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 Black to White Systems 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.