- Companies
- Electricians
- Kilmarnock
- SDK Electrical Limited
SDK Electrical Limited
- Company number
- SC488250
- Incorporated
- 6 Oct 201412 years trading
- Registered office
- 1 Simonsburn Road, Kilmarnock, KA1 5LA
- Nature of business
- Electrical installation
SDK Electrical Limited is a 12-year-old private limited company registered in Kilmarnock, company number SC488250, one of 43 electrical contractors in Kilmarnock. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 £229 (+37.8%) on the year before, to £835.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £9,144 against £7,428 owed within a year: 1.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £835 | £9,144 | £7,428 | 1 | |
| 31 Oct 2023 | £606 | £18K | £4,592 | 1 | |
| 31 Oct 2022 | £2,176 | £9,758 | £1,999 | 2 | |
| 31 Oct 2021 | £1,423 | £6,530 | £1,980 | 2 | |
| 31 Oct 2020 | £19K | £17K | £12K | 2 | |
| 31 Oct 2019 | £4,460 | £3,580 | £410 | 2 | |
| 31 Oct 2018 | £1,331 | £2,375 | £2,764 | ||
| 31 Oct 2017 | £4,420 | £928 | £1,199 | ||
| 31 Oct 2016 | £2,828 | £3,584 | £3,909 | £4,139 | |
| 31 Oct 2015 | £2,751 | £13K | £14K | £11K |
Where SDK Electrical Limited is registered
The registered office is in Kilmarnock (KA1), in the East Ayrshire local authority area, Scotland. Show KA1 5LA 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
Shared registered office
70 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if SDK Electrical 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- SC488250
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 October 2014 (12 years ago)
- Registered office
- 1 Simonsburn Road, Kilmarnock, KA1 5LA
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 27 April 2026
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.
- Secure Access Scotland Ltd2024
- Spartan Electrical Ayrshire Ltd2025
- The Power Manager Ups Limited2024
- A & C New Electrical Limited2014
- A H Marine Ltd2006
- A.S.K Electrical Ayrshire Limited2017
- Akm Electricals Limited2013
- Allan Electrical Services Ltd1997
All electrical contractors in Kilmarnock · All trades in Kilmarnock · Electricians across the UK
Frequently asked questions
When are SDK Electrical Limited's accounts due?
SDK Electrical Limited's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is SDK Electrical Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SDK Electrical Limited still trading?
SDK Electrical 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 SDK Electrical Limited do?
SDK Electrical Limited is registered under Electrical installation (SIC 43210).
How old is SDK Electrical Limited?
SDK Electrical Limited was incorporated on 6 October 2014, 12 years ago.
What is the penalty if SDK Electrical 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 SDK Electrical 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.