- Companies
- Machinery repair and installation
- Ilford
- Black Box (London) Limited
Black Box (London) Limited
- Company number
- 09079896
- Incorporated
- 10 Jun 201412 years trading
- Registered office
- Security House 7-8 Sevenways Parade, Woodford Avenue, Gantshill, Ilford, Essex, IG2 6XH
- Nature of business
- Repair of other equipment
Black Box (London) Limited is a 12-year-old private limited company registered in Ilford, company number 09079896, one of 81 machinery repair and installation companies in Ilford. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 up £614 (+24.4%) on the year before, to £3,126.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £54K against £46K owed within a year: 1.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £3,126 | £54K | £46K | 1 | |
| 30 Jun 2024 | £2,512 | £53K | £39K | 1 | |
| 30 Jun 2023 | £1,910 | £61K | £43K | 1 | |
| 30 Jun 2022 | £12K | £67K | £58K | 1 | |
| 30 Jun 2021 | £4,303 | £57K | £56K | 1 | |
| 30 Jun 2020 | £4,655 | £59K | £57K | 1 | |
| 30 Jun 2019 | £4,004 | £59K | £57K | ||
| 30 Jun 2018 | £16K | £67K | £63K | ||
| 30 Jun 2017 | £10K | £68K | £61K | ||
| 30 Jun 2016 | £4,700 | £60K | £60K |
Where Black Box (London) Limited is registered
The registered office is in Ilford (IG2), in the Redbridge local authority area, London. Show IG2 6XH on a map.
Other trade companies in IG2
- GRR Renovation LtdBuilders
- Luc&T LtdBuilders
- Dorhak LtdFinishing trades
- Top Shine London Cleaning Services LtdCleaning companies
- Revano Renovation LtdBuilders
- Dareen Group LtdProperty developers
- Urban Dreams Properties LimitedProperty developers
- Smart Property Group LtdProperty developers
Also registered at this address
2 other companies use the same registered office as Black Box (London) Limited.
- Deals in Wheels Gloucester LimitedMotor traders
- Henson Roofing LimitedRoofers
What happens if Black Box (London) 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 09079896
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 June 2014 (12 years ago)
- Registered office
- Security House 7-8 Sevenways Parade, Woodford Avenue, Gantshill, Ilford, Essex, IG2 6XH
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 10 June 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Ilford
Other active machinery repair and installation companies registered in Ilford.
- Brasjery Refrigeration Service Ltd2019
- Car-Tronics (Leicester) Limited2004
- Centurion Heating & Plumbing Ltd2018
- Channa Engineering Limited2011
- China Aviation Services Limited2018
- Composite Trade UK Ltd2011
- Cool Tech Masterz Ltd2026
- Daniel Collier Services (Ilford) Limited2012
All machinery repair and installation companies in Ilford · All trades in Ilford · Machinery repair and installation across the UK
Frequently asked questions
When are Black Box (London) Limited's accounts due?
Black Box (London) Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Black Box (London) Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Black Box (London) Limited still trading?
Black Box (London) 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 Box (London) Limited do?
Black Box (London) Limited is registered under Repair of other equipment (SIC 33190).
How old is Black Box (London) Limited?
Black Box (London) Limited was incorporated on 10 June 2014, 12 years ago.
What is the penalty if Black Box (London) 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 Box (London) 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.