- Companies
- Electricians
- Slough
- Isparky Electrical Services Limited
Isparky Electrical Services Limited
- Company number
- 07319943
- Incorporated
- 20 Jul 201016 years trading
- Registered office
- 32 Chiltern Road, Burnham, Slough, Berkshire, SL1 7NH
- Nature of business
- Electrical installation
Isparky Electrical Services Limited is a 16-year-old private limited company registered in Slough, company number 07319943, one of 101 electrical contractors in Slough. 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 £8,262 on the year before, to -£8,076.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £25K against £19K owed within a year: 1.3 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 Jul 2025 | -£8,076 | £16K | £25K | £19K | 2 |
| 31 Jul 2024 | £186 | £650 | £44K | £29K | 2 |
| 31 Jul 2023 | -£48 | £8,181 | £60K | £52K | 2 |
| 31 Jul 2022 | £6 | £5,328 | £36K | £24K | 4 |
| 31 Jul 2021 | £6,808 | £29K | £39K | £18K | 2 |
| 31 Jul 2020 | £8,407 | £15K | £23K | £18K | 2 |
| 31 Jul 2019 | £7,588 | £13K | £17K | £13K | 2 |
| 31 Jul 2018 | £61 | ||||
| 31 Jul 2017 | £22 | £13K | £21K | ||
| 31 Jul 2016 | £898 | £12K | £23K |
Where Isparky Electrical Services Limited is registered
The registered office is in Slough (SL1), in the Buckinghamshire local authority area, South East. Show SL1 7NH on a map.
Other trade companies in SL1
- Yanky Construction LtdBuilders
- Westside Automotive LtdMotor traders
- Shadeworks LtdInstallers
- Yad Building Services LimitedBuilders
- Slough Vehicle Repair Centre LtdMechanics and garages
- Hadi Automotive LtdMotor traders
- Imperial Berkshire Motors LtdMotor traders
- MDN General LtdBuilders
What happens if Isparky 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 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
- 07319943
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 July 2010 (16 years ago)
- Registered office
- 32 Chiltern Road, Burnham, Slough, Berkshire, SL1 7NH
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 12 July 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 Slough
Other active electrical contractors registered in Slough.
- J Banger Limited2011
- Jas Electrical & Security Services Ltd2017
- JK Plumb Gas and Electrics Ltd2011
- JTG Electrical Services Limited2025
- K & M Contractors Limited2012
- Kaizenray Limited2025
- LMB Heating and Electrical Limited2021
- Lomas Electrical Ltd2017
All electrical contractors in Slough · All trades in Slough · Electricians across the UK
Frequently asked questions
When are Isparky Electrical Services Limited's accounts due?
Isparky Electrical Services Limited's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Isparky Electrical Services Limited'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 Isparky Electrical Services Limited still trading?
Isparky 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 Isparky Electrical Services Limited do?
Isparky Electrical Services Limited is registered under Electrical installation (SIC 43210).
How old is Isparky Electrical Services Limited?
Isparky Electrical Services Limited was incorporated on 20 July 2010, 16 years ago.
What is the penalty if Isparky 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 Isparky 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.