- Companies
- Electricians
- Kilmarnock
- O'Neil Electrical Installations Ltd
O'Neil Electrical Installations Ltd
- Company number
- SC605369
- Incorporated
- 15 Aug 20188 years trading
- Registered office
- 26 Portland Road, Kilmarnock, Ayrshire, KA1 2EB
- Nature of business
- Electrical installation
O'Neil Electrical Installations Ltd is a 8-year-old private limited company registered in Kilmarnock, company number SC605369, one of 43 electrical contractors in Kilmarnock. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £1,736 (-13.8%) on the year before, to -£14K.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £15K against £26K owed within a year: 0.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | -£14K | £204 | £15K | £26K | 1 |
| 31 Aug 2024 | -£13K | £417 | £2,477 | £10K | 1 |
| 31 Aug 2023 | £3,445 | £3,256 | £25K | £10K | 1 |
| 31 Aug 2022 | £5,008 | £8,303 | £33K | £10K | 1 |
| 31 Aug 2021 | £8,069 | £20K | £38K | £6,091 | 1 |
| 31 Aug 2020 | -£132 | £4,398 | £5,458 | £5,590 | 1 |
| 31 Aug 2019 | £0 | £0 | £0 | 1 |
Where O'Neil Electrical Installations Ltd is registered
The registered office is in Kilmarnock (KA1), in the East Ayrshire local authority area, Scotland. Show KA1 2EB on a map.
Other trade companies in KA1
- MM Electrical Instalations LtdElectricians
- Cornerstone Project Management LtdBuilders
- JCC.Vertex Build LtdElectricians
- Deo Property Consortium LimitedProperty developers
- Jake Robb Joinery LimitedJoiners and carpenters
- Cby Plumbing & Heating Solutions LtdPlumbers and heating engineers
- Elite Installs Scotland LtdPlumbers and heating engineers
- Elevate Joinery & Conservatory Specialist Ayrshire LimitedJoiners and carpenters
Also registered at this address
6 other companies use the same registered office as O'Neil Electrical Installations Ltd.
- G-Tech Autos LtdMotor traders
- Parker Bros. (Kilmarnock) LimitedMotor traders
- Professional Distribution Services LtdMechanics and garages
- Rig Access LimitedScaffolders
- RPS Render & Facade Systems LtdPlasterers
- Saltire Kiwi Motorcycles Ltd.Mechanics and garages
What happens if O'Neil Electrical Installations 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- SC605369
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 August 2018 (8 years ago)
- Registered office
- 26 Portland Road, Kilmarnock, Ayrshire, KA1 2EB
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 14 August 2025
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Kilmarnock
Other active electrical contractors registered in Kilmarnock.
- RM Electrics Ltd2024
- RMML Renewables Ltd2024
- Roche Electrical Services Limited2013
- Scottland CCTV Ltd2025
- SDK Electrical Limited2014
- Secure Access Scotland Ltd2024
- Spartan Electrical Ayrshire Ltd2025
- The Power Manager Ups Limited2024
All electrical contractors in Kilmarnock · All trades in Kilmarnock · Electricians across the UK
Frequently asked questions
When are O'Neil Electrical Installations Ltd's accounts due?
O'Neil Electrical Installations Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is O'Neil Electrical Installations Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is O'Neil Electrical Installations Ltd still trading?
O'Neil Electrical Installations Ltd is listed as active on the Companies House register (checked 12 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 O'Neil Electrical Installations Ltd do?
O'Neil Electrical Installations Ltd is registered under Electrical installation (SIC 43210).
How old is O'Neil Electrical Installations Ltd?
O'Neil Electrical Installations Ltd was incorporated on 15 August 2018, 8 years ago.
What is the penalty if O'Neil Electrical Installations 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 O'Neil Electrical Installations Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.