- Company number
- 09931958
- Incorporated
- 30 Dec 201510 years trading
- Registered office
- 23 Eastern Avenue, Southsea, Hampshire, PO4 8QL
- Nature of business
- Construction of domestic buildings
Blackmore Electrical Services Limited is a 10-year-old private limited company registered in Southsea, company number 09931958, one of 53 building contractors in Southsea. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £11K (-724.3%) on the year before, to -£9,851.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £11K against £21K owed within a year: 0.5 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 Dec 2025 | -£9,851 | £11K | £21K | 2 | |
| 31 Dec 2024 | £1,578 | £7,275 | £7,275 | £595 | 2 |
| 31 Dec 2023 | £8,135 | £12K | £12K | £595 | 1 |
| 31 Dec 2022 | £7,757 | £9,388 | £9,388 | £595 | 1 |
| 31 Dec 2021 | £6,370 | £3,558 | £3,558 | £595 | 1 |
| 31 Dec 2020 | £6,892 | £5,433 | £5,433 | 1 | |
| 31 Dec 2019 | £4,363 | £1,551 | £1,551 | £595 | 1 |
| 31 Dec 2018 | £5,843 | £3,031 | £3,031 | £595 | |
| 31 Dec 2017 | £3,105 | £293 | £293 | £595 | |
| 31 Dec 2016 | £806 | £1,311 | £1,401 | £595 |
Who runs and owns Blackmore Electrical Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| R*** B*** | Director | Dec 2015 |
| R*** B*** | Secretary | Dec 2015 |
Person with significant control
Where Blackmore Electrical Services Limited is registered
The registered office is in Southsea (PO4), in the Portsmouth local authority area, South East. Show PO4 8QL on a map.
Other trade companies in PO4
- Prestiige LtdMechanics and garages
- Portsea Homes LimitedProperty developers
- Elite Building Services (Portsmouth) LtdBuilders
- G Form Drylining LimitedPlasterers
- Solent Sales Haulage & Storage LtdMotor traders
- Koko Construction LtdBuilders
- Chase RCS LtdCivil engineering
- Proper Job Handyman LtdFinishing trades
What happens if Blackmore Electrical Services 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 09931958
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 December 2015 (10 years ago)
- Registered office
- 23 Eastern Avenue, Southsea, Hampshire, PO4 8QL
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 29 December 2025
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 Southsea
Other active building contractors registered in Southsea.
- Boon Construction Ltd2024
- Brialex Construction Ltd2016
- Castaway Carpentry Ltd2023
- Cdi Homes Limited2017
- Cmhireforce Ltd2022
- D L Home Improvements Ltd2025
- D Robinson Brickwork Ltd2025
- D W L Home Improvements Ltd2021
All building contractors in Southsea · All trades in Southsea · Builders across the UK
Frequently asked questions
When are Blackmore Electrical Services Limited's accounts due?
Blackmore Electrical Services Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Blackmore Electrical Services Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Blackmore Electrical Services Limited still trading?
Blackmore Electrical Services 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 Blackmore Electrical Services Limited do?
Blackmore Electrical Services Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Blackmore Electrical Services Limited?
Blackmore Electrical Services Limited was incorporated on 30 December 2015, 10 years ago.
Who runs Blackmore Electrical Services Limited?
Blackmore Electrical Services Limited has 1 active director, the longest-serving appointed in Dec 2015. Their names and service addresses are on the Companies House register.
Who owns Blackmore Electrical Services Limited?
One person or company has significant control of Blackmore Electrical Services Limited: an individual (owns 75% or more of the shares).
What is the penalty if Blackmore Electrical Services 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 Blackmore Electrical Services 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.