- Companies
- Electricians
- Swansea
- RMB Electrical Ltd
RMB Electrical Ltd
- Company number
- 06285238
- Incorporated
- 19 Jun 200719 years trading
- Registered office
- 4 Heol Ceri, Waunarlwydd, Swansea, SA5 4QU
- Nature of business
- Electrical installation
RMB Electrical Ltd is a 19-year-old private limited company registered in Swansea, company number 06285238, one of 148 electrical contractors in Swansea. 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 down £1,762 (-6.3%) on the year before, to £26K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £55K against £28K owed within a year: 1.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £26K | £55K | £28K | 2 | |
| 30 Sep 2023 | £28K | £56K | £28K | 2 | |
| 30 Sep 2022 | £45K | £81K | £36K | 1 | |
| 30 Sep 2021 | £21K | £47K | £26K | 1 | |
| 30 Sep 2020 | £15K | £29K | £14K | 1 | |
| 30 Sep 2019 | £16K | £34K | £18K | 1 | |
| 30 Sep 2018 | £19K | £40K | £21K | ||
| 30 Sep 2017 | £25K | £54K | £29K | ||
| 30 Sep 2016 | £17K | £45K | £28K | ||
| 30 Sep 2015 | £17K | £13K | £46K | £30K |
Where RMB Electrical Ltd is registered
The registered office is in Swansea (SA5), in the Swansea local authority area, Wales. Show SA5 4QU 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
Also registered at this address
12 other companies use the same registered office as RMB Electrical Ltd.
- Concept Carpentry Solutions LtdProperty developers
- Freshwater Interiors LtdPlumbers and heating engineers
- Jonsil Bricklaying Contractors LtdInstallers
- Marcus Technical Solutions LtdPlasterers
- Pro-Base Installations LtdInstallers
- Robert Thomas Painters & Decorators LtdFloor and wall tilers
- S J Bevan Carpentry & Joinery LtdJoiners and carpenters
- Supreme Ceilings & Carpentry LtdJoiners and carpenters
- Thermal Insulation Co. LimitedInstallers
- Third Stone Interior Solutions LtdInstallers
- W4K LtdPlumbers and heating engineers
- West Coast Decorators LtdFloor and wall tilers
What happens if RMB 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
- 06285238
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 June 2007 (19 years ago)
- Registered office
- 4 Heol Ceri, Waunarlwydd, Swansea, SA5 4QU
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 19 June 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.
- Robinson's Lighting & Electrical Services Limited2023
- Ross Moulton Electrical Limited2017
- RTB Electrical Services Limited2017
- Sah Electrical (South Wales) Limited2018
- Sean Ltd2010
- SJC Electrical Contractors Ltd2023
- SKR Electrical Solutions Ltd2022
- Sky Blue Solar Ltd2023
All electrical contractors in Swansea · All trades in Swansea · Electricians across the UK
Frequently asked questions
When are RMB Electrical Ltd's accounts due?
RMB 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 RMB 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 RMB Electrical Ltd still trading?
RMB 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 RMB Electrical Ltd do?
RMB Electrical Ltd is registered under Electrical installation (SIC 43210).
How old is RMB Electrical Ltd?
RMB Electrical Ltd was incorporated on 19 June 2007, 19 years ago.
What is the penalty if RMB 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 RMB 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.