- Company number
- 10535491
- Incorporated
- 21 Dec 20169 years trading
- Registered office
- Regent House, 316A Beulah Hill, London, SE19 3HF
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Blue Sapphire Group Ltd is a 9-year-old private limited company registered in London, company number 10535491, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £43K (-27.8%) on the year before, to -£199K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £1.8M against £19K owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- 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 Jul 2025 | -£199K | £12K | £1.8M | £19K | 1 |
| 31 Jul 2024 | -£155K | £26K | £2M | £1.6M | 1 |
| 31 Jul 2023 | -£125K | £63K | £1.5M | £2.1M | 0 |
| 31 Jul 2022 | -£25K | £2,373 | £1.7M | £1.5M | 0 |
| 31 Jul 2021 | £75K | £1,358 | £1M | £333K | 0 |
| 31 Dec 2020 | £66K | £25K | £853K | £16K | 0 |
| 31 Dec 2019 | £100 | £100 | |||
| 31 Dec 2018 | £100 | £100 | |||
| 31 Dec 2017 | £1 | £1 |
Where Blue Sapphire Group Ltd is registered
The registered office is in London (SE19), in the Croydon local authority area, London. Show SE19 3HF on a map.
Other trade companies in SE19
- Peak Contractor Services LtdRoofers
- Adisco Engineering Plumbing and Gas LtdPlumbers and heating engineers
- Melo Development Partners LtdElectricians
- Via Alta Assets LimitedMechanics and garages
- Sekgro Groups LtdProperty developers
- BDB London LtdMachinery repair and installation
- Ibd Construction LtdSpecialist contractors
- Skylimit Facility Services LimitedFacilities management
Also registered at this address
3 other companies use the same registered office as Blue Sapphire Group Ltd.
- Diamond Investment RD 2 LimitedProperty developers
- Diamond Investment RD LimitedProperty developers
- Monumental Enterprises LimitedJoiners and carpenters
What happens if Blue Sapphire Group 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 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
- 10535491
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 December 2016 (9 years ago)
- Registered office
- Regent House, 316A Beulah Hill, London, SE19 3HF
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 9 December 2025
- Charges (mortgages)
- 2 outstanding of 7 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Blue Skies Homeworks Ltd2026
- Blue Sky Developers Limited2015
- Blue Sky Structures Ltd2025
- Blue Star Advisory Consultants Limited2025
- Blue Star Roofing Ltd2023
- Blue Zone Builders Ltd2025
- Blue1 Wave Limited2024
- Bluebirds Spaces Limited2022
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Blue Sapphire Group Ltd's accounts due?
Blue Sapphire Group Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Blue Sapphire Group Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Blue Sapphire Group Ltd still trading?
Blue Sapphire Group 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 Blue Sapphire Group Ltd do?
Blue Sapphire Group Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Blue Sapphire Group Ltd?
Blue Sapphire Group Ltd was incorporated on 21 December 2016, 9 years ago.
What is the penalty if Blue Sapphire Group 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 Blue Sapphire Group 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.