- Companies
- Electricians
- Swansea
- Sub Electrical Ltd
Sub Electrical Ltd
- Company number
- 10372002
- Incorporated
- 13 Sep 201610 years trading
- Registered office
- 8 Bryntywod, Llangyfelach, Swansea, SA5 7LE
- Nature of business
- Electrical installation
Sub Electrical Ltd is a 10-year-old private limited company registered in Swansea, company number 10372002, one of 148 electrical contractors in Swansea. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Sub Electrical LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £1,397 (-6.1%) on the year before, to -£24K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | -£24K | £1,966 | £30K | 2 | |
| 30 Sep 2024 | -£23K | £10K | £31K | 2 | |
| 30 Sep 2023 | -£25K | £5,823 | £27K | 2 | |
| 30 Sep 2022 | -£28K | £6,889 | £30K | 2 | |
| 30 Sep 2021 | -£15K | £5,488 | £19K | 2 | |
| 30 Sep 2020 | -£17K | £247 | £18K | 0 | |
| 30 Sep 2019 | -£7,652 | £259 | £18K | ||
| 30 Sep 2018 | -£6,350 | £1,009 | £21K | 1 | |
| 30 Sep 2017 | -£3,794 | £1,325 | £5,119 | 1 |
Where Sub Electrical Ltd is registered
The registered office is in Swansea (SA5), in the Swansea local authority area, Wales. Show SA5 7LE on a map.
Other trade companies in SA5
- Lee.T73 Rail LtdCivil engineering
- LJ Cleaning Swansea LimitedCleaning companies
- Same Day Roof Repairs Swansea LtdRoofers
- Warlow&Co LimitedProperty developers
- RNJ Vehicle Repairs LtdMechanics and garages
- Erj's Recovery and Transportation LtdMotor traders
- Brandrick Group LimitedElectricians
- Chris Chambers Holdings LimitedElectricians
What happens if Sub 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 10372002
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 September 2016 (10 years ago)
- Registered office
- 8 Bryntywod, Llangyfelach, Swansea, SA5 7LE
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 12 September 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 Swansea
Other active electrical contractors registered in Swansea.
- Swansea Electrical Solutions Ltd2021
- T. J. Brown Ltd2025
- Talsin Limited2016
- Tec Electrical Ltd2025
- The Alternative Energy Centre Ltd2023
- Thermavolt Energy Solutions Ltd2025
- Three Phase Ltd2026
- Tidal Develop and Construct Ltd2026
All electrical contractors in Swansea · All trades in Swansea · Electricians across the UK
Frequently asked questions
When are Sub Electrical Ltd's accounts due?
Sub Electrical Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Sub Electrical Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Sub Electrical Ltd still trading?
Sub 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 Sub Electrical Ltd do?
Sub Electrical Ltd is registered under Electrical installation (SIC 43210).
How old is Sub Electrical Ltd?
Sub Electrical Ltd was incorporated on 13 September 2016, 10 years ago.
What is the penalty if Sub 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 Sub 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.