- Companies
- Civil engineering
- Sheffield
- Blacklight Consulting Limited
Blacklight Consulting Limited
- Company number
- 05738607
- Incorporated
- 10 Mar 200620 years trading
- Registered office
- c/o C/O Tingle Ashmore Ltd, Enterprise House, Broadfield Court, Sheffield, South Yorkshire, S8 0XF
- Nature of business
- Construction of other civil engineering projects n.e.c.
Blacklight Consulting Limited is a 20-year-old private limited company registered in Sheffield, company number 05738607, one of 107 civil engineering contractors in Sheffield. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £72K (+78.6%) on the year before, to £162K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £186K against £28K owed within a year: 6.6 times cover.
- 2 employees 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £162K | £186K | £28K | 2 | |
| 31 Mar 2024 | £91K | £114K | £26K | 2 | |
| 31 Mar 2023 | £111K | £137K | £30K | 2 | |
| 31 Mar 2022 | £128K | £157K | £30K | 2 | |
| 31 Mar 2021 | £98K | £129K | £33K | 2 | |
| 31 Mar 2020 | £78K | £101K | £26K | 1 | |
| 31 Mar 2019 | £80K | £101K | £24K | ||
| 31 Mar 2018 | £79K | £92K | £18K | ||
| 31 Mar 2017 | £86K | £104K | £20K | ||
| 31 Mar 2016 | £84K | £17K | £100K | £18K |
Where Blacklight Consulting Limited is registered
The registered office is in Sheffield (S8), in the Sheffield local authority area, Yorkshire and The Humber. Show S8 0XF on a map.
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What happens if Blacklight Consulting 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 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
- 05738607
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 March 2006 (20 years ago)
- Registered office
- c/o C/O Tingle Ashmore Ltd, Enterprise House, Broadfield Court, Sheffield, South Yorkshire, S8 0XF
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 10 March 2026
- Previous names
- M J Garvey Limited (until 27 Jun 2016)
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Sheffield
Other active civil engineering contractors registered in Sheffield.
- Briddon Construction Limited2015
- Building Conservation Solutions Ltd2008
- Carter Taylor Civil Engineering Limited2016
- Centreplain Limited1978
- CG Pipework Ltd2015
- Claycomms Ltd2026
- Clear Plumbing Solutions Limited2018
- Collins & Sons Engineering Ltd2010
All civil engineering contractors in Sheffield · All trades in Sheffield · Civil engineering across the UK
Frequently asked questions
When are Blacklight Consulting Limited's accounts due?
Blacklight Consulting Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Blacklight Consulting Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Blacklight Consulting Limited still trading?
Blacklight Consulting 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 Blacklight Consulting Limited do?
Blacklight Consulting Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Blacklight Consulting Limited?
Blacklight Consulting Limited was incorporated on 10 March 2006, 20 years ago.
What is the penalty if Blacklight Consulting 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 Blacklight Consulting 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.