- Companies
- Electricians
- Saffron Walden
- Castleside Electrical Ltd
Castleside Electrical Ltd
- Company number
- 09547711
- Incorporated
- 17 Apr 201511 years trading
- Registered office
- Cambridge House, 16 High Street, Saffron Walden, Essex, CB10 1AX
- Nature of business
- Electrical installation; Dormant Company
Castleside Electrical Ltd is a 11-year-old private limited company registered in Saffron Walden, company number 09547711, one of 25 electrical contractors in Saffron Walden. 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 £8,742 (+77.2%) on the year before, to £20K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £35K against £28K owed within a year: 1.3 times cover.
- 1 employee 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 | £20K | £35K | £28K | 1 | |
| 31 Mar 2024 | £11K | £32K | £38K | 1 | |
| 31 Mar 2023 | £16K | £28K | £27K | 1 | |
| 30 Jun 2022 | -£931 | £56K | £76K | 1 | |
| 30 Jun 2021 | £427 | £427 | 0 | ||
| 30 Jun 2020 | £427 | £427 | 0 | ||
| 30 Jun 2019 | £427 | £427 | |||
| 30 Jun 2018 | £427 | £427 | |||
| 30 Jun 2017 | £427 | £427 | £0 | ||
| 30 Apr 2016 | £732 | £8,995 | £19K | £35K |
Where Castleside Electrical Ltd is registered
The registered office is in Saffron Walden (CB10), in the Uttlesford local authority area, East of England. Show CB10 1AX on a map.
Other trade companies in CB10
- 1841 Properties LimitedProperty developers
- Bovingdons Developments LtdProperty developers
- JDSW Construction Services LtdBuilders
- Foresite Fencing LtdInstallers
- Greenfield 1 LimitedProperty developers
- Greenfield 2 LimitedProperty developers
- Jet Developments Essex LimitedProperty developers
- CC Arch Scaffolding LtdScaffolders
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 Castleside Electrical 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 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
- 09547711
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 April 2015 (11 years ago)
- Registered office
- Cambridge House, 16 High Street, Saffron Walden, Essex, CB10 1AX
- Nature of business
- Electrical installation (SIC 43210)
Dormant Company (SIC 99999) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 17 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 Saffron Walden
Other active electrical contractors registered in Saffron Walden.
- Clarity UK Ltd1998
- DJ Coles Services Limited2012
- Enc Electrical Limited2004
- Freeley Renewables Ltd2023
- Home Energy Innovation Limited2022
- Ipm Fire & Security Ltd2018
- J Germeney Electrical Services Ltd2014
- JDS Electrical Solutions Limited2012
All electrical contractors in Saffron Walden · All trades in Saffron Walden · Electricians across the UK
Frequently asked questions
When are Castleside Electrical Ltd's accounts due?
Castleside Electrical Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Castleside Electrical Ltd'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 Castleside Electrical Ltd still trading?
Castleside Electrical Ltd 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 Castleside Electrical Ltd do?
Castleside Electrical Ltd is registered under Electrical installation (SIC 43210); Dormant Company (SIC 99999).
How old is Castleside Electrical Ltd?
Castleside Electrical Ltd was incorporated on 17 April 2015, 11 years ago.
What is the penalty if Castleside Electrical 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 Castleside Electrical Ltd 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.